CN213172427U - Dust discharging device of blast furnace crude gas dedusting dust suction and discharge tank car - Google Patents
Dust discharging device of blast furnace crude gas dedusting dust suction and discharge tank car Download PDFInfo
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- CN213172427U CN213172427U CN202021943134.4U CN202021943134U CN213172427U CN 213172427 U CN213172427 U CN 213172427U CN 202021943134 U CN202021943134 U CN 202021943134U CN 213172427 U CN213172427 U CN 213172427U
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- 239000000428 dust Substances 0.000 title claims abstract description 135
- 238000007599 discharging Methods 0.000 title description 43
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 151
- 229910052757 nitrogen Inorganic materials 0.000 claims description 72
- 239000007789 gas Substances 0.000 claims description 69
- 238000007664 blowing Methods 0.000 claims description 33
- 238000010926 purge Methods 0.000 claims description 29
- 230000000903 blocking effect Effects 0.000 claims description 15
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims 3
- 239000002956 ash Substances 0.000 description 108
- 230000000740 bleeding effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本实用新型涉及一种高炉粗煤气除尘灰吸排罐车卸灰装置，属于高炉用卸灰装置领域。粗煤气除尘器的出口内可拆卸安装有防堵套管，防堵套管通过卸灰管路Ⅰ与排灰罐相连，排灰罐的放散口通过放散管路Ⅰ与罐顶除尘器的进气口相连，罐顶除尘器的出气口连有放散管路Ⅱ；排灰罐的下部接有卸灰管路Ⅱ，卸灰管路Ⅱ通过物料输送管与吸排罐车相连接；卸灰管路Ⅰ与卸灰管路Ⅱ上沿卸灰方向均依次设有卸灰阀与密封阀，放散管路Ⅰ与放散管路Ⅱ上均设有放散阀；罐顶除尘器的下部通过卸灰管路Ⅲ与排灰罐相连，卸灰管路Ⅲ上也设有卸灰阀。本装置实现了全密闭输送卸灰，避免了卸灰扬尘，改善了区域环境，同时也降低了煤气泄漏的风险。
The utility model relates to a blast furnace crude gas dust-removing ash suction and discharge tank truck ash unloading device, which belongs to the field of blast furnace ash unloading devices. An anti-blocking sleeve is detachably installed in the outlet of the crude gas dust collector. The anti-blocking sleeve is connected to the ash discharge tank through the ash discharge pipeline I, and the discharge port of the ash discharge tank is connected to the inlet of the tank top dust collector through the discharge pipeline I. The air outlet is connected to the air outlet, and the air outlet of the dust collector on the top of the tank is connected with the discharge pipeline II; the lower part of the ash discharge tank is connected with the ash discharge pipeline II, and the ash discharge pipeline II is connected with the suction and discharge tank truck through the material conveying pipe; the ash discharge pipeline Ash discharge valve and sealing valve are arranged in sequence along the ash discharge direction on I and ash discharge pipeline II, and discharge valves are provided on both discharge pipeline I and discharge pipeline II; the lower part of the tank top dust collector passes through the ash discharge pipeline III is connected to the ash discharge tank, and the ash discharge pipeline III is also provided with an ash discharge valve. The device realizes fully enclosed conveying and unloading ash, avoids ash unloading and raising dust, improves the regional environment, and reduces the risk of gas leakage.
Description
Technical Field
The utility model belongs to the ash discharge device field for the blast furnace, concretely relates to blast furnace coarse coal gas dust removal inhales row tank car ash discharge device.
Background
The blast furnace crude gas system generally adopts a gravity dust collector or a cyclone dust collector to carry out crude dust collection, the lower part of the blast furnace crude gas system is generally provided with a gas ash stirrer, and the crude gas dust is humidified and stirred by the gas ash stirrer and then is transported out by a truck. Practice has proved that the following problems exist in the ash discharge scheme: 1) the ash discharging operation is performed by manual field operation, and because the operation levels of operators are different, the water pumping amount of the stirrer is also controlled differently, so that dust can fly due to small water amount, and mortar can flow out from the tail of the truck due to large water amount, thereby polluting the road surface. 2) The temperature of the crude gas dust is between 80 and 120 ℃, and a large amount of water vapor can be generated after water is pumped, so that the judgment of field operators on the actual ash discharge condition is influenced, and the truck is easy to overflow and leak ash. 3) If the ash discharge operation is improper, the blast furnace gas leakage is easily caused after the material level exceeds the low material level, and the potential safety hazard exists.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a blast furnace crude gas dust removal suction and discharge tank car ash discharging device avoids unloading the ash raise dust, satisfies the environmental protection requirement.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a blast furnace crude gas dedusting ash suction and discharge tank car ash discharging device comprises a crude gas deduster, an ash discharging tank and a tank top deduster, wherein an anti-blocking sleeve is detachably mounted in an outlet of the crude gas deduster and is connected with the ash discharging tank through an ash discharging pipeline I; the lower part of the ash discharge tank is connected with an ash discharge pipeline II, and the ash discharge pipeline II is connected with a suction and discharge tank car through a material conveying pipe; the ash discharge pipeline I and the ash discharge pipeline II are sequentially provided with an ash discharge valve and a sealing valve along the ash discharge direction, and the diffusing pipeline I and the diffusing pipeline II are respectively provided with a diffusing valve; the lower part of the tank top dust remover is connected with the ash discharge tank through an ash discharge pipeline III, and an ash discharge valve is also arranged on the ash discharge pipeline III.
The device further comprises a nitrogen purging pipeline, wherein the nitrogen purging pipeline is connected with the nitrogen blocking pipeline in parallel, and one end of the nitrogen purging pipeline and one end of the nitrogen blocking pipeline are respectively connected to the upper part and the lower part of the ash discharging tank; and the nitrogen purging pipeline and the nitrogen blocking pipeline are correspondingly provided with a purging valve and a blocking valve.
Furthermore, the nitrogen blowing pipeline is also connected with a nitrogen back blowing pipeline and a nitrogen blowing-assisting pipeline, wherein the other end of the nitrogen back blowing pipeline is connected with the tank top dust remover, the other end of the nitrogen blowing-assisting pipeline is connected with the material conveying pipe, a back blowing valve is arranged on the nitrogen back blowing pipeline, and a blowing-assisting valve is arranged on the nitrogen blowing-assisting pipeline.
Furthermore, a nitrogen gas source is connected in front of the junction of the nitrogen purging pipeline, the nitrogen back blowing pipeline and the nitrogen blowing-assisting pipeline, and a pressure reducing valve group and a check valve are sequentially arranged on the pipeline between the nitrogen gas source and the junction along the nitrogen conveying direction.
Further, the air inlet of the tank top dust remover is positioned at the upper part of the cylinder body and tangent to the inner wall of the cylinder body, the air outlet is positioned at the top of the cylinder body above the air inlet, and a filter bag is arranged at the position, opposite to the air outlet, inside the tank top dust remover.
Further, the pipe diameter of the air inlet of the tank top dust remover is smaller than that of the air outlet.
Furthermore, the anti-blocking sleeve is inserted into the coarse gas dust remover from the outlet end of the coarse gas dust remover to a certain depth.
Furthermore, the anti-blocking sleeve is correspondingly connected with the raw gas dust remover and the ash discharge valve through flanges.
Furthermore, a weighing sensor, a material level measurer, a thermometer, a pressure detector and a CO concentration detector are correspondingly arranged on the ash discharge tank.
Further, the raw gas dust remover is a gravity dust remover or a cyclone dust remover.
The working principle is as follows:
the lower part of the crude gas dust remover is provided with an ash discharge tank, the upper part and the lower part of the ash discharge tank are respectively provided with an ash discharge valve and a sealing valve, and the ash discharge process is divided into two steps: firstly, discharging crude gas dust from a crude gas dust collector into an ash discharge tank through a one-key dust discharge control system, introducing dusty gas flow to high altitude for discharge after dust removal of the dust collector on the top of the tank, and opening a nitrogen purge valve in a linkage manner after a sealing valve is closed to replace gas possibly entrained by the gas dust in the ash discharge tank; and secondly, after the gas in the ash discharge tank is replaced, connecting a material conveying pipe at the lower part of the ash discharge tank with a suction and discharge tank car, and discharging the crude gas dedusting ash into the suction and discharge tank car through a one-key ash discharge control system. The tail part of the material conveying pipe is provided with a nitrogen blowing-assisting system, and blowing assistance can be carried out through high-pressure nitrogen when ash discharge is not smooth.
The beneficial effects of the utility model reside in that:
the device realizes full-closed conveying and ash discharging, avoids ash discharging and dust raising, improves the regional environment and simultaneously reduces the risk of gas leakage. And through a one-key ash discharging control system, the automation level of the ash discharging operation is improved, and the labor determiners can be properly reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the apparatus.
Reference numerals:
the device comprises a raw gas dust remover 1, an anti-blocking sleeve 2, an ash discharging valve 3, a sealing valve 4, an ash discharging pipeline I5, an ash discharging tank 6, an ash discharging valve 7, a sealing valve 8, a material conveying pipe 9, a suction and discharge tank car 10, a bleeding valve 11, a bleeding pipeline I12, a tank top dust remover 13, a bleeding valve 14, a bleeding pipeline II 15, an ash discharging valve 16, an ash discharging pipeline III 17, a nitrogen gas source 18, a pressure reducing valve group 19, a check valve 20, a nitrogen back blowing pipeline 21, a back blowing valve 22, a purging valve 23, a nitrogen purging pipeline 24, a nitrogen blocking pipeline 25, a blowing blocking valve 26, a nitrogen auxiliary blowing pipeline 27, an auxiliary blowing valve 28 and an ash discharging pipeline II 29.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1, the dust discharging device of the blast furnace crude gas dust removal suction and discharge tank car comprises a crude gas dust remover 1, a dust discharging tank 6 and a tank top dust remover 13, wherein an anti-blocking sleeve 2 is detachably mounted in an outlet of the crude gas dust remover 1, the anti-blocking sleeve 2 is connected with the dust discharging tank 6 through a dust discharging pipeline I5, a diffusing port of the dust discharging tank 6 is connected with an air inlet of the tank top dust remover 13 through a diffusing pipeline I12, and an air outlet of the tank top dust remover 13 is connected with a diffusing pipeline II 15; the lower part of the ash discharge tank 6 is connected with an ash discharge pipeline II 29, and the ash discharge pipeline II 29 is connected with the suction and discharge tank car 10 through a material conveying pipe 9; an ash discharge valve 3 and a sealing valve 4 are sequentially arranged on the ash discharge pipeline I5 along the ash discharge direction, an ash discharge valve 7 and a sealing valve 8 are sequentially arranged on the ash discharge pipeline II 29 along the ash discharge direction, a bleeding valve 11 is arranged on the bleeding pipeline I12, and a bleeding valve 14 is arranged on the bleeding pipeline II 15; the lower part of the tank top dust remover 13 is connected with the ash discharge tank 6 through an ash discharge pipeline III 17, and an ash discharge valve 16 is also arranged on the ash discharge pipeline III 17.
In the device, a replaceable anti-blocking sleeve 2 is arranged in a crude gas dust collector 1, crude gas dust is discharged into a dust discharge tank 6 through the anti-blocking sleeve 2, a dust discharge valve 3 and a sealing valve 4 which are arranged on the upper portion of the dust discharge tank 6, and dust-containing airflow in the dust discharge tank 6 enters a tank top dust collector 13 from a discharge port of the dust discharge tank 6 through a discharge pipeline I12 to be discharged in a high-altitude mode and then is led to be discharged in a high-altitude mode from a discharge pipeline II 15 on the top of the tank top dust collector. The dust of the crude gas is discharged into a suction and discharge tank car 10 through an ash discharge valve 7, a sealing valve 8 and a material conveying pipe 9 at the lower part of an ash discharge tank 6; and after the tank top dust remover 13 removes dust from the diffused gas, the dust is returned to the dust discharging tank 6 through the dust discharging valve 16 and the dust discharging pipeline III 17 at the lower part of the tank top dust remover 13, and is discharged into the suction and discharge tank car 10 together with the dust removed from the crude gas. The device realizes the full-closed conveying and ash discharging, avoids the flying of dust and improves the regional environment.
The scheme also comprises a nitrogen auxiliary ash discharge system, namely a nitrogen purging pipeline 24, wherein a nitrogen blowing and blocking pipeline 25 is connected to the nitrogen purging pipeline 24 in parallel, one end of the nitrogen purging pipeline 24 is connected to the upper part of the ash discharge tank 6, and one end of the nitrogen blowing and blocking pipeline 25 is connected to the lower part of the ash discharge tank 6; the nitrogen purging pipeline 24 is correspondingly provided with a purging valve 23, and the nitrogen blocking pipeline 25 is correspondingly provided with a blocking valve 26. After the crude gas dust is discharged into the dust discharge tank 6, the purging valve 23 is opened, nitrogen enters the dust discharge tank 6 through the nitrogen purging pipeline 24 to purge gas possibly existing in the dust discharge tank 6, and after the gas in the dust discharge tank 6 is replaced, the material conveying pipe 9 at the lower part of the dust discharge tank is connected with the suction and discharge tank car 10, so that potential safety hazards caused when the gas enters the tank car when the suction and discharge tank car 10 sucks dust can be prevented. When the bottom of the ash discharging tank 6 is blocked by an ash discharging opening, high-pressure nitrogen can be used for blowing and blocking.
The nitrogen auxiliary ash discharge system also comprises a nitrogen back-blowing pipeline 21 and a nitrogen blowing-assisting pipeline 27, wherein the other end of the nitrogen back-blowing pipeline 21 is connected to the tank top dust remover 13, the other end of the nitrogen blowing-assisting pipeline 27 is connected with the material conveying pipe 9, a back-blowing valve 22 is arranged on the nitrogen back-blowing pipeline 21, and a blowing-assisting valve 28 is arranged on the nitrogen blowing-assisting pipeline 27. Wherein the nitrogen back-blowing pipeline 21 and the back-blowing valve 22 can provide a nitrogen back-blowing air source for the pulse blowing device of the tank top dust remover 13, and the nitrogen blowing-assisting pipeline 27 and the blowing-assisting valve 28 can provide a nitrogen blowing-assisting air source for the material conveying pipe 9, so as to prevent the material conveying pipe 9 from being blocked.
Correspondingly, a nitrogen gas source 18 is connected in front of a junction A of the nitrogen purging pipeline 24, the nitrogen back blowing pipeline 21 and the nitrogen blowing-assisting pipeline 27, and a pressure reducing valve group 19 and a check valve 20 are sequentially arranged on a pipeline between the nitrogen gas source 18 and the junction A along the nitrogen conveying direction. The pressure reducing valve group 19 can adjust the pressure of the nitrogen, and the check valve 20 can prevent the gas system from flowing back into the nitrogen system, so that the safety of the system is ensured.
The tank deck dust remover in this scheme is combined type tank deck dust remover, and its characteristics that have integrateed cyclone and sack and have removed dust. Specifically, the air inlet of the dust remover is positioned on the upper part of the cylinder and tangent to the inner wall of the cylinder, the air outlet is positioned at the top of the cylinder above the air inlet, and the inside of the dust remover is provided with a filter bag at the position opposite to the air outlet. The dusty airflow tangentially enters the dust remover, is upwards filtered by the filter bag after swirling to the bottom, and is then discharged from the gas outlet at the top, so that the dust concentration can meet the requirement of ultra-low emission standard.
Preferably, the pipe diameter of the air inlet of the composite type tank top dust remover is smaller than that of the air outlet. Therefore, the pressure difference is not easy to build on two sides of the filter bag in the dust remover, the risk that the cage bones of the filter bag are crushed is reduced, and the service life of the composite type tank top dust remover is prolonged.
In the scheme, the anti-blocking sleeve 2 is inserted into the coarse gas dust remover 1 from the outlet end of the coarse gas dust remover 1 to a certain depth, and the upper port of the anti-blocking sleeve 2 can be inserted into the middle part of the lower conical section of the coarse gas dust remover 1, so that large materials can be prevented from falling into the ash discharging pipeline I5 and blocking a pipeline.
Preferably, the anti-blocking sleeve 2 is correspondingly connected with the raw gas dust remover 1 and the ash discharge valve 3 through flanges. When the blast furnace is regularly repaired, a maintainer can remove the valve and then replace the anti-blocking sleeve 2 outside without entering the inside of the raw gas dust remover 1.
In the scheme, the ash discharge tank 6 is correspondingly provided with a weighing sensor, a material level measurer, a thermometer, a pressure detector and a CO concentration detector. So as to carry out weighing, material level detection, ash temperature measurement, pressure measurement in the dust discharge tank and CO concentration detection on the dust in the dust discharge tank.
The device is also provided with a one-key ash unloading control system which can improve the automation level of the ash unloading operation. By the system, the ash discharging process is carried out in two steps: firstly, controlling one-key operation in a control room/site to realize the interlocking control of the ash discharge valve 3, the sealing valve 4 and the purge valve 23; and in the second step, one-key operation is carried out in a control room/site to realize the interlocking control of the ash discharge valve 7, the sealing valve 8 and the ash discharge valve 16.
Preferably, the raw gas dust remover is a high-pressure dust remover, such as a gravity dust remover or a cyclone dust remover.
The valves on the ash discharge pipeline and the nitrogen pipeline can adopt but not limited to electric valves, pneumatic valves, hydraulic valves and the like.
The ash discharging of the crude gas dedusting ash of the device is carried out in two steps.
Firstly, the process of unloading the dust from the raw gas dust remover 1 to the dust discharging tank 6 is as follows:
when the dust removed at the bottom of the raw gas dust remover 1 is accumulated to a certain degree and needs to be discharged, the control room/field one-key inching operation is carried out, the sealing valve 4 and the dust discharging valve 3 at the upper part of the dust discharging tank are sequentially opened, and the dust removed begins to be discharged to the dust discharging tank 6. When the weighing sensor of the ash discharge tank 6 sends a material weight qualified signal (the material weight is preset), the ash discharge valve 3 and the sealing valve 4 on the upper part of the ash discharge tank are automatically closed in sequence, the purging valve 23 is opened, and gas possibly existing in the ash discharge tank 6 is purged and replaced. At this time, the ash discharge tank 6 is filled with ash.
In the process, the bleeding valve 11 and the bleeding valve 14 are both kept in an open state, and dust-containing air flows through the tank top dust remover 13 for dust removal and then is led to high altitude for discharge.
Secondly, the process of unloading the dust from the dust discharge tank 6 to the suction and discharge tank car 10 is as follows:
when the gas concentration in the ash discharge tank 6 is reduced to a safe range, a blowing completion signal is sent out, and the blowing valve 23 is closed. If the connection of the material conveying pipe 9 and the suction and discharge tank car 10 is finished, the ash discharging operation condition can be met. At this time, the control room/site is operated by one-key clicking, the sealing valve 8 and the ash discharging valve 7 at the lower part of the ash discharge tank and the ash discharging valve 16 at the lower part of the tank top deduster are sequentially opened, the ash pumping system on the suction and discharge tank truck 10 is started, and the fly ash in the ash discharge tank 6 and the fly ash in the tank top deduster 13 start to be discharged to the suction and discharge tank truck 10. When the weighing sensor of the ash discharge tank 6 sends an empty discharge signal, an alarm is given, an operator closes the ash pumping system of the suction and discharge tank truck 10, and then the control room/site one-key inching operation closes the ash discharge valve 7, the sealing valve 8 and the ash discharge valve 16 in sequence. The ash loading of the suction and discharge tank truck 10 is finished.
In the process, the relief valve 11 and the relief valve 14 are both kept open, so that the ash discharge tank 6 and the tank top dust remover 13 are prevented from being vacuumized.
When the second step of ash discharge is blocked, the control room/field can inching open the blowing-assisting valve 28, and high-pressure nitrogen is used for blowing assistance, so that the ash discharge is smooth.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021943134.4U CN213172427U (en) | 2020-09-08 | 2020-09-08 | Dust discharging device of blast furnace crude gas dedusting dust suction and discharge tank car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021943134.4U CN213172427U (en) | 2020-09-08 | 2020-09-08 | Dust discharging device of blast furnace crude gas dedusting dust suction and discharge tank car |
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| CN213172427U true CN213172427U (en) | 2021-05-11 |
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| CN202021943134.4U Active CN213172427U (en) | 2020-09-08 | 2020-09-08 | Dust discharging device of blast furnace crude gas dedusting dust suction and discharge tank car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115896371A (en) * | 2022-10-25 | 2023-04-04 | 中冶华天工程技术有限公司 | A blast furnace crude gas ash unloading system and ash unloading method |
| CN116064984A (en) * | 2021-11-01 | 2023-05-05 | 上海梅山钢铁股份有限公司 | Automatic ash discharge device and ash discharge method for gravity dust collector |
| CN116694838A (en) * | 2023-07-20 | 2023-09-05 | 广东中南钢铁股份有限公司 | Blast furnace top gas down tube cleaning method and device |
-
2020
- 2020-09-08 CN CN202021943134.4U patent/CN213172427U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116064984A (en) * | 2021-11-01 | 2023-05-05 | 上海梅山钢铁股份有限公司 | Automatic ash discharge device and ash discharge method for gravity dust collector |
| CN115896371A (en) * | 2022-10-25 | 2023-04-04 | 中冶华天工程技术有限公司 | A blast furnace crude gas ash unloading system and ash unloading method |
| CN116694838A (en) * | 2023-07-20 | 2023-09-05 | 广东中南钢铁股份有限公司 | Blast furnace top gas down tube cleaning method and device |
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