CN206736289U - Blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device - Google Patents
Blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device Download PDFInfo
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- CN206736289U CN206736289U CN201620981779.4U CN201620981779U CN206736289U CN 206736289 U CN206736289 U CN 206736289U CN 201620981779 U CN201620981779 U CN 201620981779U CN 206736289 U CN206736289 U CN 206736289U
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Abstract
A kind of blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device, the bottom dust and gas room of each bag-type dust casing is connected with the first gas stop valve, first gas stop valve is connected to raw coke oven gas pipe, the top air-purifying chamber of each bag-type dust casing is connected with the second gas stop valve, second gas stop valve is connected to high pressure purified gas house steward, the bottom of each bag-type dust casing is connected to middle ash silo top by the first unloading valve, the bottom of middle ash silo is connected to the charging aperture for burying extending plate conveyer by the second unloading valve, the discharging opening for burying extending plate conveyer is connected to the top for concentrating ash silo；So that each bag-type dust casing top air-purifying chamber enters low pressure purified gas house steward by the second coal gas pressure-relief valve, bag-type dust casing, which unloads ash, to be carried out using dust pelletizing system gas pressure.Its advantage is to be unloaded using machinery, defeated grey technique while make use of strength to unload, defeated ash, is unloaded using strength, defeated grey technique while make use of machine power to unload, defeated ash.
Description
Technical field
It the utility model is related in metallurgy high furnace gas dry method pocket type dedusting technology field, more particularly to a kind of blast furnace gas
Dry-method bag-type dedusting mechanical compression ash-discharging device.
Background technology
The widely used dry-method bag-type dedusting of the purification process technique of raw coke oven gas caused by existing blast furnace process production process
Technology, press《Blast furnace gas dry bag-type dusting design specification》（GB50505-2009）The unloading of middle dedusting ash, defeated grey technique can adopt
With two methods of Pneumatic ash conveying or mechanical ash conveying, technically had the following disadvantages in practical application：
1st, unloaded using machinery, defeated grey technique：Casing ash silo collection ash is discharged by gravity and bulkhead mode of vibration, unloads grey speed
It is relatively slow, it is less efficient；The casing for unload ash manipulation is in interim deactivation filtering coal gas state, unloads ash manipulation time length,
The filtering production run rate of casing is reduced, and so as to have influence on the increase of system casing cloth bag load, ash manipulation switching is unloaded between each casing
When cloth bag load variations it is frequent, cloth bag service life reduce.
2nd, unloaded using strength, defeated grey technique：Unload, defeated ash manipulation requirement will reach to the pressure, flow velocity, the gas-solid ratio that convey gas
To strict design parameter, and supporting detection and automaticity require high, and cost of investment is higher；Operating process needs to aid in gas
Source, technique consumption gas flow is big, and energy resource consumption is high；In practical operation, because the ash discharge of single casing is interval and of short duration
Process, gas-solid ratio unavoidably be present in the early stage of ash discharge and later stage and do not reach Reasonable Parameters, valve, channel bend etc. can be caused
The problem of equipment attrition, or cause the positions such as ash-transmission system horizontal pipe and elbow block the problem of.
Utility model content
The purpose of this utility model be just to provide it is a kind of unloaded using system gas pressure while use machine power,
Defeated ash, unloaded for pressure, defeated grey coal gas reclaims after being filtered by coal gas relief tube and removing dust casing；Machine power is unloaded, is defeated
Ash is conveying the flow velocity of material, in the case that gas-solid ratio adjustable range is wide, solves equipment attrition or line clogging；Pressure is unloaded, is defeated
Ash is accelerated to unload the blast furnace gas dry bag-type dusting machinery formula pressure of grey speed by the use of system pressure coal gas as conveying material source of the gas
Power ash-discharging device.
Solution of the present utility model is such：
A kind of device that grey technique is unloaded using blast furnace gas dry bag-type dusting machinery formula pressure, including several cloth bags remove
Dirt casing, the bottom dust and gas room of each bag-type dust casing are connected with the first gas stop valve, and the first gas stop valve is connected to
Raw coke oven gas pipe, the top air-purifying chamber of each bag-type dust casing are connected with the second gas stop valve, the connection of the second gas stop valve
To high pressure purified gas house steward, the bottom of each bag-type dust casing is connected to middle ash silo top by the first unloading valve, middle
The bottom of ash silo is connected to the charging aperture for burying extending plate conveyer by the second unloading valve, and the discharging opening for burying extending plate conveyer is connected to
The top of ash silo is concentrated, concentrates the bottom of ash silo that the 3rd unloading valve is installed, each bag-type dust lower box dust and gas room is set
First coal gas pressure-relief valve, the first coal gas pressure-relief valve are connected to concentration ash silo by the first coal gas relief tube；Each bag-type dust
Casing top air-purifying chamber sets the second coal gas pressure-relief valve, and the second coal gas pressure-relief valve corresponding to each bag-type dust casing passes through second
Coal gas relief tube is connected to low pressure purified gas house steward.
More specifically technical scheme also includes：The first coal gas relief tube is manifold structure, by dividing on the house steward
Pipe is coupled with each first coal gas pressure-relief valve.
Further：The second coal gas relief tube is manifold structure, on the house steward by be in charge of be coupled with it is each
Second coal gas pressure-relief valve.
Further：The described tail for burying extending plate conveyer is provided with nitrogen sparge tube, is provided with nitrogen sparge tube
Control the nitrogen purge valve of gas break-make.
Further：The described extending plate conveyer that buries has closed casing, and pressure-bearing scope is 0~0.3MPa.
The utility model has the advantages that：
1st, unloaded using machinery, defeated grey technique simultaneously profit unloaded with strength, defeated ash：Casing ash silo collection ash relies on gravity and bulkhead
The vibration also discharge under gas pressure effect simultaneously, material actual internal area is big, can be kept in the case where material flow is low
The unloading ash capacity of unit interval is big, efficiency high；The casing for unload ash manipulation is in filtering coal gas state, only keeps a case
Conveying coal gas is recovered by filtration for release in body, and operating process system casing cloth bag load spacer change frequency is few, equipment life
Reliably；
2nd, unloaded using strength, defeated grey technique simultaneously profit machine power unload, defeated ash：Unload, defeated ash manipulation process is to utilize life
System pressure coal gas is produced, the parameters such as the pressure of conveying gas, flow velocity, gas-solid ratio are not required to be strict with, it is not necessary to source of the gas is aided in,
Investment and operating cost are relatively low；In the case where flow channel cross-sections product is big, though Flow of Goods and Materials speed is less than Pneumatic ash conveying technique,
But still ensure that the abrasion for efficiently unloading the equipment such as grey speed, valve, pipeline is lacked, the position such as ash-transmission system horizontal pipe and elbow
It is not in blockage problem.
Brief description of the drawings
Fig. 1 is that dedusting ash mechanical compression of the present utility model unloads grey technique and its schematic device.
Reference is in figure：1st, bag-type dust casing, 2, dust-removal cloth-bag, the 3, first coal gas pressure-relief valve, the 4, first coal gas
Relief tube, the 5, first unloading valve, 6, middle ash silo, the 7, second unloading valve, 8, connecting pipe, 9, concentrate ash silo, the 10, the 3rd unloads
Grey valve, 11, Humidifying ash discharging machine, the 12, second coal gas pressure-relief valve, the 13, second coal gas relief tube, the 14, second gas stop valve, 15,
First gas stop valve, 16, high pressure purified gas house steward, 17, raw coke oven gas pipe, 18, coal gas pressure regulation valve group, 19, low pressure purified gas it is total
Pipe, 20, electricity generation with gas waste pressure system, 21, dedusting ash, 22, nitrogen purge valve, 23, nitrogen sparge tube, 24, bury rubbing board conveying
Machine.
Embodiment
The present invention is as shown in figure 1, be that the present invention unloads grey technique using blast furnace gas dry bag-type dusting machinery formula pressure
Device, including several bag-type dust casings 1, the bottom dust and gas room of each bag-type dust casing 1 are connected with the first gas cutting
Valve 15, the first gas stop valve 15 are connected to raw coke oven gas pipe 17, and the top air-purifying chamber of each bag-type dust casing 1 is connected with second
Gas stop valve 14, the second gas stop valve 14 are connected to high pressure purified gas house steward 16, and the bottom of each bag-type dust casing 1 leads to
Cross the first unloading valve 5 and be connected to the middle top of ash silo 6, the bottom of middle ash silo 6 is connected to that to bury rubbing board defeated by the second unloading valve 7
The charging aperture of machine 24 is sent, the discharging opening for burying extending plate conveyer 24 is connected to the top for concentrating ash silo 9, concentrates the bottom peace of ash silo 9
Equipped with the 3rd unloading valve 10, each bottom dust and gas room of bag-type dust casing 1 sets the first coal gas pressure-relief valve 3, first coal gas
Pressure-relief valve 3 is connected to by the first coal gas relief tube 4 and concentrates ash silo 9；Each top air-purifying chamber of bag-type dust casing 1 sets the second coal
Gas pressure-relief valve 12, second coal gas pressure-relief valve 12 is connected to low by the second coal gas relief tube 13 corresponding to each bag-type dust casing 1
Press purified gas house steward 19.
The first coal gas relief tube 4 is manifold structure, and each first coal gas is coupled with by being in charge of on the house steward
Pressure-relief valve 3；The second coal gas relief tube 13 is manifold structure, and each second coal gas is coupled with by being in charge of on the house steward
Pressure-relief valve 12；
The described tail for burying extending plate conveyer 24 is provided with nitrogen sparge tube 23, and control is provided with nitrogen sparge tube 23
The nitrogen purge valve 22 of gas break-make, when cloth bag casing dedusting ash material-level measure is zero, close the bottom the of bag-type dust casing 1
One unloading valve 5 stops casing and unloads ash, and opening buries the afterbody nitrogen purge valve 22 of extending plate conveyer 24 and carries out coal gas purging.
The described extending plate conveyer 24 that buries has closed casing, and pressure-bearing scope is 0~0.3MPa.
Blast furnace gas dry bag-type dusting machinery formula pressure of the present utility model unloads grey technique, including step：
（1）, construction the defeated ash gas release recovery system step of pressure：Set in each bottom dust and gas room of bag-type dust casing 1
The first coal gas pressure-relief valve 3 is put, the first coal gas pressure-relief valve 3 corresponding to each bag-type dust casing 1 is connect by the first coal gas relief tube 4
To concentration ash silo 9 so that concentrate the dust coal gas with pressure in ash silo 9 to be removed by the first coal gas pressure-relief valve 3 into each cloth bag
The bottom dust and gas room of dirt casing 1；In each top air-purifying chamber of bag-type dust casing 1, the second coal gas pressure-relief valve 12, each cloth bag are set
Second coal gas pressure-relief valve 12 is connected to low pressure purified gas house steward 19 by the second coal gas relief tube 13 corresponding to dust-removing box 1 so that
Filtered purified gas enters low pressure purified gas by the second coal gas pressure-relief valve 12 in each top air-purifying chamber of bag-type dust casing 1
House steward 19；
（2）, unload grey strategy：Operated by following sequential steps：
1）, have for system two and the above bag-type dust casing 1 system, at least in two bag-type dusts when unloading ash
Casing 1 is carried out, and one of recovery as the defeated grey coal gas of pressure, the bag-type dust casing 1 does not unload ash in this period simultaneously
Also the main coal gas filtering of blast fumance is exited, and controls the inner high voltage coal gas of bag-type dust casing 1 to be returned by the second coal gas pressure-relief valve 12
Receive low pressure purified gas house steward 19 so that the bag-type dust casing 1 completes release；Other bag-type dust casing 1 is carried out one by one
Ash is unloaded, unload the bag-type dust casing of ash（1）Unload ash while also maintain the main coal gas filtering of blast fumance；
2）, open the first unloading valve of bottom 5 of bag-type dust casing 1 for unloading ash, dedusting ash 21 is in system coal gas pressure in casing
Enter middle ash silo 6 under power and self gravitation effect；
3）, open and have been loaded with the bottom unloading valve 7 of middle ash silo 6 of dedusting ash 21, dedusting ash 21 is in system gas pressure work
It is delivered to the lower airtight cavity by burying extending plate conveyer 24 and concentrates ash silo 9；
4）, open completed release bag-type dust casing 1 the first coal gas pressure-relief valve 3, concentrate ash silo 9 in pressure
Dust coal gas enters the bottom dust and gas room of bag-type dust casing 1, dust coal gas removing dust cloth bag 2 by the first coal gas relief tube 4
Purified gas after filtering is total into low pressure purified gas by the top air-purifying chamber of bag-type dust casing 1 and the second coal gas relief tube 13
Pipe 19.
Also include coal gas purge step：In step 3）Afterwards, when cloth bag casing dedusting ash material-level measure is zero, the cloth is closed
The first unloading valve of bottom 5 of bag dust-removing box 1 stops casing and unloads ash, and opening is buried the afterbody nitrogen purge valve 22 of extending plate conveyer 24 and entered
Row coal gas purges.
The step 1）In, stopping the method for the filtering of the main coal gas dust removal in a blast fumance of bag-type dust casing 1 is：
Close the first gas stop valve 15 and the second gas stop valve 14.
The step 2）In, to keep unloading having stable gas pressure in the bag-type dust casing 1 of ash, the cloth bag removes
The first gas stop valve 15 and the second gas stop valve 14 of dirt casing 1 are that two valves are in open mode, while two valves
Door can continue to the main coal gas dust removal filtering in blast fumance in open mode.
Grey technique is unloaded with system shown in Figure 1 to the blast furnace gas dry bag-type dusting machinery formula pressure of the present invention to carry out in detail
It is described as follows：
In the utility model the quantity of bag-type dust casing regard production it needs to be determined that, system shown in Figure 1 is to use four cloth
One embodiment of bag dust-removing box composition, it is assumed that after four bag-type dust casings carry out dedusting operation simultaneously, the right first
When individual bag-type dust casing 1 need to carry out mechanical pressure and unload ash manipulation, stop in the blast fumance of first left bag-type dust casing 1
The filtering of main coal gas dust removal, the method for stopping is to close the first gas stop valve 15 and the second coal gas of the bag-type dust casing 1
Stop valve 14；Keep having stable gas pressure in the first bag-type dust casing 1 in the right, the method for holding is the bag-type dust
14 two valves of the first gas stop valve 15 and the second gas stop valve of casing 1 are in open mode, reach and utilize State of Blast Furnace
Top coal atmospheric pressure can carry out unloading the purpose of ash, and dust-removing box keeps carrying out coal gas filtering simultaneously and dedusting ash unloads the operating mode of ash, has
Power load distributing is filtered beneficial to the main Gas Production of dust-removal cloth-bag in systems stabilisation.
The second coal gas pressure-relief valve 12 of first left bag-type dust casing 1 is opened, is controlled high in the bag-type dust casing 1
Pressure coal gas is recovered to low pressure purified gas house steward 19 by the second coal gas pressure-relief valve 12 so that the bag-type dust casing 1 is completed to unload
Pressure.
First the first unloading valve of bottom 5 of bag-type dust casing 1 in the right is opened, dedusting ash 21 is in system coal gas pressure in casing
Enter middle ash silo 6 under power and self gravitation effect.
The bottom unloading valve 7 of middle ash silo 6 for having been loaded with dedusting ash is opened, dedusting ash 21 is in system gas pressure and buries rubbing board
Under 24 mechanical conveying of conveyer effect concentration ash silo 9 is delivered to by burying the airtight cavity of extending plate conveyer 24.
The first coal gas pressure-relief valve 3 of first left bag-type dust casing 1 is opened, concentrates the dust with pressure in ash silo 9
Coal gas enters the bottom dust and gas room of bag-type dust casing 1 by the first coal gas relief tube 4, and dust coal gas removing dust cloth bag 2 filters
Purified gas afterwards enters low pressure purified gas house steward 19 by the top air-purifying chamber of bag-type dust casing 1 and the second coal gas relief tube 13,
Realize that pressure unloads the recovery of coal gas during ash.
When the dedusting ash material-level measure of first, the right cloth bag casing 1 is zero, the bottom of the bag-type dust casing 1 is closed
One unloading valve 5 stops casing and unloads ash, is restored to main coal gas dust removal operating mode；Opening buries the afterbody nitrogen of extending plate conveyer 24 purging
Valve 22 carries out coal gas purging, completes the one-time mechanical formula pressure of bag-type dust casing 1 and unloads ash manipulation.Mechanical type pressing need to be carried out again
When power unloads ash manipulation, then repeatedly said process.
Close nitrogen purge valve 22 and terminate purging, close the first coal gas pressure-relief valve 3 of first left bag-type dust casing 1
And the second coal gas pressure-relief valve 12, the first gas stop valve 15 and the second gas stop valve 14 of the bag-type dust casing 1 are opened, is made
Obtain the bag-type dust casing 1 and recover the main coal gas dust removal by filtration operation of blast furnace again.
Remaining bag-type dust casing 1 need to carry out carrying out by above-mentioned strategy when mechanical pressure unloads ash manipulation.
When the quantity for concentrating ash silo 9 to collect reaches setting value, open and concentrate the unloading valve 10 of 9 bottom of ash silo the 3rd, discharge
Dedusting ash 21 is transported outward after the humidification process of Humidifying ash discharging machine 11.
Claims (5)
1. a kind of blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device, including several bag-type dust casings（1）, often
Individual bag-type dust casing（1）Bottom dust and gas room be connected with the first gas stop valve（15）, the first gas stop valve（15）Connection
To raw coke oven gas pipe（17）, each bag-type dust casing（1）Top air-purifying chamber be connected with the second gas stop valve（14）, the second coal
Gas stop valve（14）It is connected to high pressure purified gas house steward (16), each bag-type dust casing（1）Bottom pass through the first unloading valve
(5) middle ash silo (6) top is connected to, the bottom of middle ash silo (6) is connected to by the second unloading valve (7) buries extending plate conveyer
(24) charging aperture, the discharging opening for burying extending plate conveyer (24) are connected to the top for concentrating ash silo (9), concentrated under ash silo (9)
Portion is provided with the 3rd unloading valve (10), it is characterised in that：Each bag-type dust casing（1）Bottom dust and gas room sets the first coal gas to unload
Pressure valve（3）, the first coal gas pressure-relief valve（3）Pass through the first coal gas relief tube（4）It is connected to concentration ash silo（9）；Each cloth bag removes
Dirt casing（1）Top air-purifying chamber sets the second coal gas pressure-relief valve（12）, each bag-type dust casing（1）Corresponding second coal gas unloads
Pressure valve（12）Pass through the second coal gas relief tube（13）It is connected to low pressure purified gas house steward（19）.
2. blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device according to claim 1, it is characterised in that：Institute
State the first coal gas relief tube（4）For manifold structure, each first coal gas pressure-relief valve is coupled with by being in charge of on the house steward
（3）.
3. blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device according to claim 1, it is characterised in that：Institute
State the second coal gas relief tube（13）For manifold structure, each second coal gas pressure-relief valve is coupled with by being in charge of on the house steward
（12）.
4. blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device according to claim 1, it is characterised in that：Institute
The tail for burying extending plate conveyer (24) stated is provided with nitrogen sparge tube（23）, in nitrogen sparge tube（23）On control gas is installed
The nitrogen purge valve of break-make（22）.
5. the blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device according to claim 1 or 4, its feature exist
In：The described extending plate conveyer (24) that buries has closed casing, and pressure-bearing scope is 0~0.3MPa.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620813270 | 2016-07-30 | ||
| CN2016208132709 | 2016-07-30 |
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| Publication Number | Publication Date |
|---|---|
| CN206736289U true CN206736289U (en) | 2017-12-12 |
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ID=60554412
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620981779.4U Expired - Fee Related CN206736289U (en) | 2016-07-30 | 2016-08-30 | Blast furnace gas dry bag-type dusting machinery formula pressure ash-discharging device |
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| CN (1) | CN206736289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636507A (en) * | 2016-07-30 | 2017-05-10 | 柳州钢铁股份有限公司 | Blast furnace gas dry method bag type dust removing mechanical type pressure dust unloading process and device thereof |
-
2016
- 2016-08-30 CN CN201620981779.4U patent/CN206736289U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636507A (en) * | 2016-07-30 | 2017-05-10 | 柳州钢铁股份有限公司 | Blast furnace gas dry method bag type dust removing mechanical type pressure dust unloading process and device thereof |
| CN106636507B (en) * | 2016-07-30 | 2019-09-10 | 柳州钢铁股份有限公司 | Blast furnace gas dry bag-type dusting machinery formula pressure unloads grey technique and its device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20190830 |
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| CF01 | Termination of patent right due to non-payment of annual fee |