CN108731487A - A kind of method and device for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system - Google Patents
A kind of method and device for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system Download PDFInfo
- Publication number
- CN108731487A CN108731487A CN201810393034.XA CN201810393034A CN108731487A CN 108731487 A CN108731487 A CN 108731487A CN 201810393034 A CN201810393034 A CN 201810393034A CN 108731487 A CN108731487 A CN 108731487A
- Authority
- CN
- China
- Prior art keywords
- temperature
- shell
- tube cooler
- furnace gas
- gas
- 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.)
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- 239000000428 dust Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 16
- 239000011707 mineral Substances 0.000 title claims abstract description 16
- 239000011286 gas tar Substances 0.000 title claims abstract description 14
- 238000005453 pelletization Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 239000011269 tar Substances 0.000 abstract description 23
- 239000004744 fabric Substances 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 38
- 238000001556 precipitation Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005235 decoking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention relates to a kind of methods for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system, it is characterised in that：Closed submerged stove（1）It generates the furnace gas that temperature is 500~800 DEG C and passes through shell and tube cooler（2）, shell and tube cooler（2）Positive four groups of axial flow blowers（7）Air-cooled processing, every axial flow blower are carried out to furnace gas in tubulation（7）By temperature controller（9）Control opening and closing, to ensure to export shell and tube cooler（2）Furnace gas temperature control at 220~250 DEG C, then the furnace gas at a temperature of this is sent to high-temperature bag dust remover（3）Purified treatment is carried out, treated gas is through net gas wind turbine（11）It is delivered to gas chamber.It is an advantage of the invention that being interlocked using temperature controller and axial flow blower, according to the corresponding wind turbine of furnace gas temperature start and stop, automatically by furnace gas temperature control in set interval, tar in furnace gas is prevented to be precipitated, it avoids blocking cloth bag, maintains the good filterability of cloth bag, ensure the normal use of equipment.
Description
Technical field
It is specifically a kind of to prevent mineral hot furnace dedusting using control interval temperature the present invention relates to mineral hot furnace production technology field
The method and device that furnace gas tar is precipitated in system.
Background technology
Mineral hot furnace is generally divided into three kinds of open stove, semi-hermetic stove and sealed furnace forms.The furnace gas temperature that closed submerged stove generates
Degree is 500~800 DEG C, has certain viscosity, and containing tar, tar Precipitation Temperature is 180 DEG C.According to closed submerged stove furnace gas
In the characteristic containing tar, tar can be precipitated when the tar in high-temperature gas encounters cryogenic object or too low gas self-temperature,
It is adsorbed on tube wall on dust-collecting bag, its system cooling effect is made to decline, finally result in furnace gas temperature and increase and burn cloth
Bag.Meanwhile tar precipitation is adsorbed on filter bag surface and the decline of its gas permeability, filtration resistance is made to improve, and finally loses filtering function.
For such case, the method for domestic generally use is generally divided into two kinds.The first, enter bag dust collector it
Before, electric tar trap is installed, tar removing process is first carried out.But electric tar trap is expensive, increase investment at
This, and electric discharge and spark are will produce when electric tar trap work, there are security risks；In addition, electric tar trap is in temperature
In the case of higher, the effect is unsatisfactory for decoking.Second, being cooled down using washing, i.e., high-temperature flue gas initially enters aeration tower,
It is sprayed in aeration tower, is cooled down to flue gas, flue gas can be reduced to 80 DEG C, the coke in flue gas can both be precipitated in this way
Oil, and flue-gas temperature can be reduced.But this method operating cost is high, and water consumption is big, uneconomical, and washes powder after dust separation
Dirt discharge cannot be up to standard；In addition, after washing, the water containing tar forms secondary pollution, and sewage will also be handled.
Therefore, it is necessary to design a kind of method and device that can cost-effectively prevent tar precipitation in furnace gas, to keep away
Antifouling and damage dust-collecting bag.
Invention content
The purpose of the present invention is exactly in order to solve the problems in the existing technology, to provide a kind of mineral hot furnace dust pelletizing system
In prevent furnace gas tar be precipitated method and device prevent temperature too low by control interval temperature and cause the precipitation of tar,
It avoids tar from being adsorbed on tube wall and dust-collecting bag and block cloth bag, maintains normal filterability, while preventing temperature again
It is excessively high and caused by burning bag, ensure the normal use of dust-collecting bag.
To achieve the goals above, present invention employs following technical solutions：
A kind of method for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system, including it is 500 that closed submerged stove, which is generated temperature,
~800 DEG C of furnace gas is sent by water cold sleeve to shell and tube cooler, then is sent to high-temperature bag dust remover and carried out purified treatment, furnace gas
Dust through being collected when shell and tube cooler, high-temperature bag dust remover is unloaded by burying scraper to ash-storing bin, high-temperature bag dust remover mistake
Gas after filter is delivered to gas chamber through net gas wind turbine, it is characterised in that：
500~800 DEG C of furnace gas is down to 350 DEG C by the temperature after water cold sleeve, subsequently into shell and tube cooler by again
Secondary cooling, the furnace gas temperature for exporting shell and tube cooler are controlled at 220~250 DEG C, are finally sent again to high-temperature bag dust remover.
When cooling, temperature controller carries out interlocked control to the axial flow blower in shell and tube cooler, passes through control shaft stream
The unlatching quantity of wind turbine adjusts the furnace gas in tubulation into trip temperature；When temperature is less than 220 DEG C, respective numbers are automatically closed
Axial flow blower；When temperature is higher than 250 DEG C, the axial flow blower of respective numbers is automatically opened.
In order to realize the above-mentioned method for preventing furnace gas tar to be precipitated, the present invention also provides in a kind of mineral hot furnace dust pelletizing system
The device for preventing furnace gas tar to be precipitated, including closed submerged stove, closed submerged stove pass through water cold sleeve, gas pipeline and shell and tube
Cooler inlet is connected, and shell and tube cooler outlet is connected by gas pipeline with high-temperature bag dust remover import again, and temperature bag is removed
The pipeline of dirt device outlet connection is equipped with wind turbine；Shell and tube cooler and high-temperature bag dust remover lower end are connected with burying scraper；Its
It is characterized in that：
Shell and tube cooler is set as two groups, is connected by pipeline between two groups of shell and tube coolers；
The longitudinally disposed one group of axial flow blower in parallel in front of every group of shell and tube cooler, and axial flow blower passes through control circuit
It is connected with a temperature controller；
The blowing mouth face shell and tube cooler setting of each axial flow blower.
The both sides of shell and tube cooler are respectively equipped with the one side wind shield parallel with shell and tube cooler side, and wind shield is big
It is small to be adapted with shell and tube cooler side size, so that the wind that axial flow blower generates cools down across cooler.
The gas pipeline of shell and tube cooler outlet is equipped with air quantity shut-off valve.
In technical scheme of the present invention, the purpose that tar is precipitated in mineral hot furnace furnace gas is prevented in order to realize, passes through temperature control
Instrument processed controls the automatic interlock of axial flow blower, when temperature is less than 220 DEG C, can close the axis of respective numbers as the case may be
Flow fan；When temperature is higher than 250 DEG C, the axial flow blower of respective numbers can will be opened.With this method and device, Ke Yiyou
Effect the tar in furnace gas is prevented to be precipitated, ensures that furnace gas temperature is run higher than tar Precipitation Temperature and less than filter bag bearing temperature,
So as to avoid tar adsorbs tube wall and dust-collecting bag and caused by cloth bag block, while maintain equipment normal operation and
It uses.
Description of the drawings
Fig. 1 is the apparatus structure schematic diagram for preventing furnace gas tar to be precipitated in a kind of mineral hot furnace dust pelletizing system of the present invention.
Specific implementation mode
In order to make the present invention be more clearly understood, below in conjunction with the accompanying drawings to preventing in a kind of mineral hot furnace dust pelletizing system of the present invention
The method and device that only furnace gas tar is precipitated further illustrates that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.
As shown in Figure 1, the device that furnace gas tar is precipitated, including closed submerged stove 1 are prevented in a kind of mineral hot furnace dust pelletizing system,
Closed submerged stove 1 is connected by water cold sleeve 4, gas pipeline 5 with 2 import of shell and tube cooler, and shell and tube cooler 2 exports again
It is connected with 3 import of high-temperature bag dust remover by gas pipeline 5, the pipeline of the outlet of high-temperature bag dust remover 3 connection is equipped with wind turbine 11；
Shell and tube cooler 2 and 3 lower end of high-temperature bag dust remover are connected with burying scraper 12, it is characterised in that：
Shell and tube cooler 2 is equipped with two groups side by side, can be connected by pipeline between two groups of shell and tube coolers 2；
The longitudinally disposed one group of axial flow blower 7 in parallel in front of every group of shell and tube cooler 2, and axial flow blower 7 passes through control
Circuit 6 is connected with a temperature controller 9；
The blowing mouth face shell and tube cooler 2 of each axial flow blower 7 is arranged.
The both sides of shell and tube cooler 2 are respectively equipped with a face wind shield 8；Wind shield 8 and the side of shell and tube cooler 2 are flat
Row, and size and 2 side of shell and tube cooler are in the same size, so that the cold wind that axial flow blower 7 generates is dropped across cooler 2
Temperature.
The gas pipeline 5 that shell and tube cooler 2 exports is equipped with air quantity shut-off valve 10.
In the present invention, closed submerged stove 1 generates the furnace gas that temperature is 500~800 DEG C and is reduced to after water cold sleeve 4
350 DEG C, then enter inside first group of shell and tube cooler 2 after gas pipeline 5；Shell and tube cooler 2 is equipped with one group of axis stream
Wind turbine 7, axial flow blower 7 are controlled by temperature controller 9, can carry out cooling processing to the furnace gas in tubulation；Then furnace gas leads to again
Piping enters second group of shell and tube cooler, and principle is consistent with first group of shell and tube cooler.When output shell and tube cooler 2
Furnace gas temperature be less than 220 DEG C when, temperature controller 9 control close respective numbers axial flow blower 7；When furnace gas temperature is higher than
At 250 DEG C, the axial flow blower 7 of respective numbers is opened in the control of temperature controller 9, to ensure to send into high-temperature bag dust remover 3
Furnace gas temperature is controlled at 220 DEG C ~ 250 DEG C, while avoiding tar and blocking cloth bag and the excessively high burning bag of furnace gas temperature is precipitated.Through excessively high
3 filtered gas of warm bag dust collector is delivered to gas chamber after net gas wind turbine 11, by shell and tube cooler 2 and temperature bag
The dust collected when deduster 3 is unloaded by burying scraper 12 to ash-storing bin.
Method and device through the invention can utilize temperature controller and axial flow blower by control interval temperature
It is interlocked, according to the corresponding axial flow blower of temperature conditions start and stop, the temperature of furnace gas is controlled to the interval range in setting automatically
It is interior, ensure that furnace gas is run higher than tar Precipitation Temperature and less than bag dust collector filter bag bearing temperature, prevents the analysis of tar in furnace gas
Go out, avoid the phenomenon that blocking cloth bag, maintains the good filterability of cloth bag, ensure that the normal use of equipment.
Claims (3)
1. a kind of method for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system, including by closed submerged stove（1）Generate temperature
Furnace gas for 500~800 DEG C passes through water cold sleeve（4）It send to shell and tube cooler（2）, then give to high-temperature bag dust remover（3）Into
Row purified treatment, furnace gas is through shell and tube cooler（2）, high-temperature bag dust remover（3）When the dust collected pass through burying scraper（12）
It unloads to ash-storing bin, high-temperature bag dust remover（3）Filtered gas is through net gas wind turbine（11）It is delivered to gas chamber, it is characterised in that：
500~800 DEG C of furnace gas passes through water cold sleeve（4）Temperature afterwards is down to 350 DEG C, subsequently into shell and tube cooler（2）
It is interior to be cooled down again, export shell and tube cooler（2）Furnace gas temperature control at 220~250 DEG C, finally send to temperature bag and remove again
Dirt device（3）.
2. the method for preventing furnace gas tar to be precipitated in a kind of mineral hot furnace dust pelletizing system according to claim 1, feature exist
In：
Temperature controller（9）To shell and tube cooler（2）In axial flow blower（7）Interlocked control is carried out, control shaft stream wind is passed through
Machine（7）Quantity is opened, the furnace gas in tubulation is adjusted into trip temperature；When temperature is less than 220 DEG C, respective numbers are automatically closed
Axial flow blower（7）；When temperature is higher than 250 DEG C, the axial flow blower of respective numbers is automatically opened（7）.
3. a kind of realizing the method for preventing furnace gas tar to be precipitated in a kind of mineral hot furnace dust pelletizing system as claimed in claim 1 or 2
Device, including closed submerged stove（1）, closed submerged stove（1）Pass through water cold sleeve（4）, gas pipeline（5）With shell and tube cooler
（2）Import is connected, shell and tube cooler（2）Outlet passes through gas pipeline again（5）With high-temperature bag dust remover（3）Import is connected, high
Warm bag dust collector（3）The pipeline of outlet connection is equipped with wind turbine（11）；Shell and tube cooler（2）And high-temperature bag dust remover（3）Under
End and burying scraper（12）It is connected；It is characterized in that：
Shell and tube cooler（2）Longitudinally disposed one group of front axial flow blower in parallel（7）, and axial flow blower（7）Pass through control
Circuit（6）With a temperature controller（9）It is connected；
Each axial flow blower（7）Blowing mouth face shell and tube cooler（2）Setting；
Shell and tube cooler（2）Both sides be respectively equipped with one side and shell and tube cooler（2）The parallel wind shield in side（8）, gear
Aerofoil（8）Size and shell and tube cooler（2）Side size is adapted；
Shell and tube cooler（2）The gas pipeline of outlet（5）It is equipped with air quantity shut-off valve（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810393034.XA CN108731487A (en) | 2018-04-27 | 2018-04-27 | A kind of method and device for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810393034.XA CN108731487A (en) | 2018-04-27 | 2018-04-27 | A kind of method and device for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108731487A true CN108731487A (en) | 2018-11-02 |
Family
ID=63939349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810393034.XA Withdrawn CN108731487A (en) | 2018-04-27 | 2018-04-27 | A kind of method and device for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108731487A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821303A (en) * | 2019-03-27 | 2019-05-31 | 上海超高环保科技股份有限公司 | High temperature resistant sintered plate dust-extraction unit and dust removal method |
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| CN201325953Y (en) * | 2008-12-17 | 2009-10-14 | 江苏森泽环保工程科技有限公司 | Furnace gas purification system of closed-type calcium carbide furnace |
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| CN102878822A (en) * | 2012-10-24 | 2013-01-16 | 辽宁环宇环保技术有限公司 | Device and method for purifying and recycling furnace gas of hermetic ore smelting furnace |
| CN202666622U (en) * | 2012-04-10 | 2013-01-16 | 安徽省元琛环保科技有限公司 | Inclosed electric furnace dry method dust removing device |
| CN103372360A (en) * | 2013-08-02 | 2013-10-30 | 合肥合意环保科技工程有限公司 | Automatic temperature control dry method for purification and recycling of enclosed calcium carbide furnace tail gas and device for the method |
| CN104457301A (en) * | 2014-12-28 | 2015-03-25 | 大连华锐重工集团股份有限公司 | Furnace gas sensible heat utilization system of airtight submerged arc furnace |
| CN208313068U (en) * | 2018-04-27 | 2019-01-01 | 安徽宸瑞节能环保科技工程有限公司 | A kind of device for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system |
-
2018
- 2018-04-27 CN CN201810393034.XA patent/CN108731487A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201325953Y (en) * | 2008-12-17 | 2009-10-14 | 江苏森泽环保工程科技有限公司 | Furnace gas purification system of closed-type calcium carbide furnace |
| CN202666621U (en) * | 2012-04-10 | 2013-01-16 | 安徽省元琛环保科技有限公司 | Dry method dust removal device of hermetic electric furnace and with high-temperature bypass devices |
| CN202666622U (en) * | 2012-04-10 | 2013-01-16 | 安徽省元琛环保科技有限公司 | Inclosed electric furnace dry method dust removing device |
| CN102878822A (en) * | 2012-10-24 | 2013-01-16 | 辽宁环宇环保技术有限公司 | Device and method for purifying and recycling furnace gas of hermetic ore smelting furnace |
| CN103372360A (en) * | 2013-08-02 | 2013-10-30 | 合肥合意环保科技工程有限公司 | Automatic temperature control dry method for purification and recycling of enclosed calcium carbide furnace tail gas and device for the method |
| CN104457301A (en) * | 2014-12-28 | 2015-03-25 | 大连华锐重工集团股份有限公司 | Furnace gas sensible heat utilization system of airtight submerged arc furnace |
| CN208313068U (en) * | 2018-04-27 | 2019-01-01 | 安徽宸瑞节能环保科技工程有限公司 | A kind of device for preventing furnace gas tar to be precipitated in mineral hot furnace dust pelletizing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821303A (en) * | 2019-03-27 | 2019-05-31 | 上海超高环保科技股份有限公司 | High temperature resistant sintered plate dust-extraction unit and dust removal method |
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Application publication date: 20181102 |
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