CN111841176A - Dust removal ash recovery device - Google Patents
Dust removal ash recovery device Download PDFInfo
- Publication number
- CN111841176A CN111841176A CN202010863080.9A CN202010863080A CN111841176A CN 111841176 A CN111841176 A CN 111841176A CN 202010863080 A CN202010863080 A CN 202010863080A CN 111841176 A CN111841176 A CN 111841176A
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- CN
- China
- Prior art keywords
- ash
- nozzle
- bin
- recovery device
- buffering
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- 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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Classifications
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- 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
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- 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
- B01D46/04—Cleaning filters
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- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
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- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/52—Adaptations of pipes or tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
- B65G69/181—Preventing escape of dust by means of sealed systems
Abstract
The invention discloses a dedusting ash recovery device. The device comprises a bag type dust collector, a chain conveyor, a buffering dust collecting bin, a Roots blower, a blowing pump, a dust bin and a screw conveyor; the lower part of the bag type dust collector is connected with the buffering dust collecting bin through a chain conveyor; the lower part of the buffering ash collecting bin is connected with the ash bin through a blowing system consisting of a Roots blower and a blowing pump, and the screw conveyer is fixed at the bottom of the ash bin. The invention has the advantages of simple structure, convenient operation and management, low labor intensity, low investment and maintenance cost, easy realization of automatic control, effective avoidance of secondary dust pollution, strong practicability and high economic benefit.
Description
Technical Field
The invention relates to a dust removal ash recovery device, in particular to a centralized recovery device for dry dust removal ash collected in the iron alloy industrial production.
Background
In the industrial production process of ferroalloy, a large amount of smoke is generated, and toxic and harmful dust in the smoke is purified by a dust removal system according to the requirement of environmental protection and then is discharged to the atmosphere. Because the dust remover is installed on a production line more frequently and is arranged scattered frequently, dust collected by the dust removal system is required to be discharged into a truck or a trolley manually and then conveyed to a specified place, secondary dust raising is very serious in the process, and serious threats are caused to the health and the natural environment of workers. On the other hand, the personnel that need be transported and collect the dust removal ash concentratedly are many, and workman's intensity of labour is high.
In order to solve the problems, the invention develops the ferroalloy dedusting ash recovery device which can avoid secondary dust raising, reduce the labor intensity of workers, and is simple, practical and low in cost.
Disclosure of Invention
The invention aims to provide a dedusting ash recovery device.
The invention is realized by the following technical scheme:
a dust removal recovery device comprises a bag type dust collector, and further comprises a chain conveyor, a buffering dust collection bin, a Roots blower, a blowing pump, a dust bin and a screw conveyor;
the lower part of the bag type dust collector is connected with the buffering dust collecting bin through a chain conveyor;
the lower part of the buffering ash collecting bin is connected with the ash bin through a blowing system consisting of a Roots blower and a blowing pump, and the screw conveyer is fixed at the bottom of the ash bin.
Furthermore, an ash discharge valve is arranged at the bottom of the bag type dust collector, when a certain amount of dust is collected by the bag type dust collector, the ash discharge valve is opened, the materials are discharged in sequence intermittently through the ash discharge valve, and the ash materials collected by the bag type dust collector enter a chain conveyor and are conveyed to a bottom buffering ash collecting bin.
When the ash level in the buffering ash collecting bin rises to touch the capacitance type material level meter, the material level meter sends a full material signal, and the airtight type ash discharge valve below the buffering ash collecting bin is opened for discharging.
And a bin top dust remover is installed above the ash bin, and dust removed by the bag type dust remover falls into an ash hopper of the dust remover through compressed air pulse blowing of the bin top dust remover.
The blowing pump is communicated with the ash bin through an ash conveying pipeline, one end of the ash conveying pipeline close to the blowing pump is a steady flow straight pipe, namely the ash conveying pipeline is connected between the blowing system and the ash bin, and one section of straight pipe is arranged at the end of the ash conveying pipeline close to the blowing system, so that the steady flow effect is achieved, and the ash-carrying gas can stably flow into the ash conveying pipeline without flowing back.
The device is characterized in that the injection pump consists of a shell, a nozzle and a nozzle adjusting mechanism, wherein the nozzle adjusting mechanism is an adjusting pipe provided with internal threads, the air inlet end of the nozzle is of an external thread cylindrical structure, the air outlet end of the nozzle is of a conical structure, the air inlet end of the nozzle is connected with the nozzle adjusting mechanism through a thread structure, and the air outlet end of the nozzle is fixed in the shell; the nozzle adjusting mechanism adjusts the front and rear positions of the nozzle by adjusting the lengths of the internal thread and the external thread, so that the material carrying characteristics of the system are adjusted, and the blowing effect is adjusted.
The length ratio of the external thread cylindrical structure to the conical structure of the nozzle is 3:4, and the preferred scheme is that the length of the external thread cylindrical structure is 1.2 meters, wherein the length of the external thread cylindrical structure is phi 46 on the air inlet side, the length of the external thread cylindrical structure is phi 38 on the air outlet side, and the length of the current stabilizing straight pipe is phi 125; or the preferred scheme is that the air inlet side phi 52 and the air outlet side phi 48 of the nozzle conical structure, and the steady flow straight pipe phi 150 is 1.5 meters long; the nozzle is a generating element of jetting jet flow, is a key for ensuring that a jetting system has excellent material carrying characteristics and power performance, and has great influence on the jetting effect, the design of the nozzle structure, the diameter and the length of a steady flow section and the diameter of an ash conveying pipeline are important factors for forming negative pressure and smoothly carrying and jetting of the jetting system, and the optimal material conveying speed can be achieved by comprehensively considering the air quantity of a Roots blower, the particle size of ash, the water content and other factors of all parts.
The device is suitable for recovering the dust with the diameter of less than 1 millimeter and the free water content of about 5 percent, and the operation process comprises four stages: (1) a collection stage: the dust-removing ash collected by the bag type dust collector falls into an ash hopper of the dust collector through compressed air pulse injection, is discharged in an intermittent mode sequentially through an ash discharge valve, enters a chain conveyor and is conveyed to a bottom buffering ash collecting bin; (2) a discharging stage: when the ash level in the buffering ash collecting bin rises to touch the material level device, the material level device sends a full material signal, and the airtight ash discharging valve below the buffering ash collecting bin is opened for discharging; (3) and (3) a blowing fluidization stage: before the blowing system works, the position of a nozzle is adjusted, the designed air speed at the outlet of the nozzle is higher, and a negative pressure area is formed at an ash inlet, so that the air-tight ash discharge valve can smoothly discharge the dust into the blowing system, and the dust in the blowing system is always in a state of fluidization and conveying in the process of descending the ash level of the buffering ash collection bin; (4) a conveying and utilizing stage: the dust-removing ash enters an ash bin through a steady flow section and an ash conveying pipeline, enters a spiral conveyor at the bottom of the ash bin after being dedusted and exhausted by a dust remover at the top of the bin, and is finally conveyed to a raw material humidifying stirrer to participate in a new round of ingredient production; in addition, under the condition that the conditions of the fly ash which can be directly sold, terrain and the like permit, the dust bin can be replaced by the powder transporting tank car, and the fly ash can be transported to the powder transporting tank car by the system to be directly pulled away for sale.
Compared with the prior art, the invention has the following advantages:
(1) the structure is simple, the mechanical transmission parts are few, the operation and management are convenient, and the labor intensity is low;
(2) the investment and maintenance cost are low, the arrangement of the conveying line is flexible, one or more groups of blowing systems are selected and combined according to the actual situation, the blowing systems can be dispersedly conveyed to different areas, and the blowing systems can be concentrated from different directions;
(3) the aerodynamic performance is good, the automatic control is easy to realize, and the system operation conditions including pressure, conveying capacity and the like can be continuously monitored;
(4) can effectively avoid secondary dust pollution, and has strong practicability and high economic benefit.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection structure of the injection pump and the ash conveying pipe;
FIG. 3 is a schematic view of embodiment 1 of the present invention;
in the figure: 1-bag type dust collector, 22-ash discharge valve, 3-chain conveyor, 4-buffer ash collecting bin, 5-capacitance level indicator, 6-airtight ash discharge valve, 7-Roots blower, 8-blowing pump, 9-bin top dust collector, 10-ash bin, 11-spiral conveyor, 12-ash conveying pipeline, 13-steady flow straight pipe, 14-wet mixer, 81-shell, 82-nozzle and 83-nozzle adjusting mechanism.
Detailed Description
The present invention is further described below with reference to specific examples, but it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Various changes or modifications of the present invention based on the present invention should be made by those skilled in the art within the scope of the present invention.
The fly ash recovery device shown in fig. 1 comprises a bag type dust collector 1, and further comprises a chain conveyor 3, a buffering dust collecting bin 4, a roots blower 7, a blowing pump 8, an ash bin 10 and a screw conveyor 11; wherein the lower part of the bag type dust collector 1 is connected with a buffering dust collecting bin 4 through a chain conveyor 3; the lower part of the buffering ash collecting bin 4 is connected with an ash bin 10 through a blowing system consisting of a Roots blower 7 and a blowing pump 8, and the spiral conveyor 11 is fixed at the bottom of the ash bin 10.
Wherein the bottom of the bag type dust collector 1 is provided with an ash discharge valve 2, and the ash discharge valve 2 is connected with a chain conveyor 3 to intermittently discharge materials to the bag type dust collector 1; a bin top dust remover 9 and a capacitance type material level meter 5 are arranged above the buffering ash collecting bin 4, an airtight type ash discharging valve 6 is arranged at the bottom, and when the ash level rises to touch the capacitance type material level meter, the bin top dust remover 9 and the airtight type ash discharging valve 6 are opened for discharging.
The blowing pump 8 is communicated with the ash bin 10 through an ash conveying pipeline 12, wherein one end of the ash conveying pipeline 12 close to the blowing pump 8 is a cylindrical steady flow straight pipe 13, so that the steady flow effect is achieved, and the ash-carrying gas can stably flow into the ash conveying pipeline without flowing back.
The injection pump 8 shown in fig. 2 is composed of a housing 81, a nozzle 82, and a nozzle adjusting mechanism 83, wherein the nozzle adjusting mechanism 83 is an adjusting pipe provided with internal threads, the air inlet end of the nozzle 82 is an external thread cylindrical structure, the air outlet end is a conical structure, the air inlet end of the nozzle 82 is connected with the nozzle adjusting mechanism 83 through a thread structure, the air outlet end of the nozzle 82 is fixed in the housing 81, and the front and rear positions of the nozzle 82 are adjusted by adjusting the length of the internal and external threads when the injection pump operates, and when the injection pump is specifically designed, the length ratio of the external thread cylindrical structure to the conical structure of the nozzle 82 is 3:4, and the air inlet side Φ 46, the air outlet side Φ 38, and the steady flow Φ 125 of the nozzle 82 are 1.2 meters long.
As shown in figure 3, the device arranges in a certain ferronickel factory rotary kiln tail flue gas processing system, and the rotary kiln contains dirt flue gas and sends to the collection ash storehouse after collecting the ferronickel fly ash through the sack dust collector, sends the fly ash to the raw materials processing factory through defeated ash system, but reuse behind the 14 humidification stirring of wet process mixer raw materials batching.
Example 2
The fly ash recovery device shown in fig. 1 comprises a bag type dust collector 1, and further comprises a chain conveyor 3, a buffering dust collecting bin 4, a roots blower 7, a blowing pump 8, an ash bin 10 and a screw conveyor 11; wherein the lower part of the bag type dust collector 1 is connected with a buffering dust collecting bin 4 through a chain conveyor 3; the lower part of the buffering ash collecting bin 4 is connected with an ash bin 10 through a blowing system consisting of a Roots blower 7 and a blowing pump 8, and the spiral conveyor 11 is fixed at the bottom of the ash bin 10.
Wherein the bottom of the bag type dust collector 1 is provided with an ash discharge valve 2, and the ash discharge valve 2 is connected with a chain conveyor 3 to intermittently discharge materials to the bag type dust collector 1; a bin top dust remover 9 and a capacitance type material level meter 5 are arranged above the buffering ash collecting bin 4, an airtight type ash discharging valve 6 is arranged at the bottom, and when the ash level rises to touch the capacitance type material level meter, the bin top dust remover 9 and the airtight type ash discharging valve 6 are opened for discharging.
The blowing pump 8 is communicated with the ash bin 10 through an ash conveying pipeline 12, wherein one end of the ash conveying pipeline 12 close to the blowing pump 8 is a cylindrical steady flow straight pipe 13, so that the steady flow effect is achieved, and the ash-carrying gas can stably flow into the ash conveying pipeline without flowing back.
The injection pump 8 shown in fig. 2 is composed of a housing 81, a nozzle 82, and a nozzle adjusting mechanism 83, wherein the nozzle adjusting mechanism 83 is an adjusting pipe provided with internal threads, the air inlet end of the nozzle 82 is an external thread cylindrical structure, the air outlet end is a conical structure, the air inlet end of the nozzle 82 is connected with the nozzle adjusting mechanism 83 through a thread structure, the air outlet end of the nozzle 82 is fixed in the housing 81, and when the injection pump operates, the front and back positions of the nozzle 82 are adjusted by adjusting the length of the internal and external threads, and when the injection pump is specifically designed, the length ratio of the external thread cylindrical structure to the conical structure of the nozzle 82 is 3:4, and the air inlet side Φ 52, the air outlet side Φ 48, the steady flow Φ 150 and the length of the conical structure of the nozzle 82 are 1.
The device is arranged in a certain industrial silicon electric furnace flue gas treatment system, the bag type dust collector collects silicon powder in industrial silicon flue gas and then sends the silicon powder to the ash collecting bin, and the silicon powder is sent to a powder transporting tank car through the ash conveying system and sold to nearby refractory material plants for batching and utilization.
Claims (10)
1. A recovery device for dust-removing ash comprises a bag type dust collector and is characterized by also comprising a chain conveyor, a buffering ash collecting bin, a Roots blower, a blowing pump, an ash bin and a screw conveyor;
the lower part of the bag type dust collector is connected with the buffering dust collecting bin through a chain conveyor;
the lower part of the buffering ash collecting bin is connected with the ash bin through a blowing system consisting of a Roots blower and a blowing pump, and the screw conveyer is fixed at the bottom of the ash bin.
2. A fly ash recovery device as claimed in claim 1, wherein the bottom of the bag house is provided with an ash discharge valve.
3. A fly ash recovery device as claimed in claim 1 or 2, wherein a capacitance type level gauge is installed above the buffer ash collecting bin.
4. A fly ash recovery device as claimed in claim 1 or 2, wherein the bottom of the buffering ash collecting bin is provided with an airtight type ash discharge valve.
5. A fly ash recovery device as claimed in claim 1 or 2, wherein a top dust collector is installed above the ash bin.
6. A fly ash recovery device as claimed in claim 1 or 2, wherein the blowing pump is connected to the ash bin via an ash duct, wherein a steady flow straight pipe is provided at an end of the ash duct close to the blowing pump.
7. The recycling device for dust removed ash according to claim 1 or 2, wherein said blowing pump is composed of a housing, a nozzle, and a nozzle adjusting mechanism, wherein said nozzle adjusting mechanism is an adjusting pipe provided with internal threads, the air inlet end of said nozzle is of an external thread cylindrical structure, the air outlet end of said nozzle is of a conical structure, the air inlet end of said nozzle is connected with said nozzle adjusting mechanism through a thread structure, and the air outlet end of said nozzle is fixed on said housing.
8. A fly ash recovery device as claimed in claim 7, wherein the length ratio of the externally threaded cylindrical structure to the conical structure of the nozzle is 3: 4.
9. A fly ash recovery device as claimed in claim 7, wherein the nozzle cone has an air inlet side Φ 46 and an air outlet side Φ 38.
10. A fly ash recovery device as claimed in claim 7, wherein the nozzle cone has an inlet side Φ 52 and an outlet side Φ 48.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863080.9A CN111841176A (en) | 2020-08-25 | 2020-08-25 | Dust removal ash recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863080.9A CN111841176A (en) | 2020-08-25 | 2020-08-25 | Dust removal ash recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111841176A true CN111841176A (en) | 2020-10-30 |
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ID=72968152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010863080.9A Pending CN111841176A (en) | 2020-08-25 | 2020-08-25 | Dust removal ash recovery device |
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| Country | Link |
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| CN (1) | CN111841176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115649874A (en) * | 2022-10-31 | 2023-01-31 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Dust treatment device for semiconductor material preparation |
-
2020
- 2020-08-25 CN CN202010863080.9A patent/CN111841176A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115649874A (en) * | 2022-10-31 | 2023-01-31 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Dust treatment device for semiconductor material preparation |
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