CN203360397U - Coal mill drying systems adopting parallel structure - Google Patents
Coal mill drying systems adopting parallel structure Download PDFInfo
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- CN203360397U CN203360397U CN 201320318756 CN201320318756U CN203360397U CN 203360397 U CN203360397 U CN 203360397U CN 201320318756 CN201320318756 CN 201320318756 CN 201320318756 U CN201320318756 U CN 201320318756U CN 203360397 U CN203360397 U CN 203360397U
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- blower fan
- fan
- butterfly valve
- air duct
- airduct
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Abstract
The utility model discloses coal mill drying systems adopting a parallel structure, which comprise a fan A, an A-series working system, a fan B and a B-series working system, wherein the fan A is connected by an air duct A; the A-series working system comprises a hot-blast stove A; the fan B is connected by an air duct B; the B-series working system comprises a hot-blast stove B; a communicating pipe is mounted between the air duct A and the air duct B. A connecting pipe is additionally arranged between the two drying systems to realize the one for use one for spare parallel use of the two systems; dry hot air is provided for two sets of coal mills only by one system, so that a large amount of electric resources is saved, and the cost is lowered considerably; in case of failure, one system is switched to the other system in time to continue working and the faulted system is overhauled, and the normal coal mill production is not influenced.
Description
Technical field
The utility model relates to a kind of mill coal drying system, relates in particular to a kind of mill coal drying system of parallel-connection structure.
Background technology
The mill coal drying system is the dehumidification system be connected on coal pulverizer, is the source of fine coal gasification process, and during work, dry heat is from hotblast stove, and burner blower is being undertaken the task that combustion air is provided for hotblast stove.The burner blower design variable is: Q=12500m
3/ h, total head 11000Pa, drive-motor is 75kw, the motor rated current is that the normal running current of 133.8A(is 55-60A).Production process is found, the calorific value of comprehensive maximum coal-supplying amount, raw coal water content and fuel gas, every hotblast stove consumed cabin air amount 2000-4000m3/h left and right, peak flow 6000m3/h, pressure is greater than 7000Pa can meet processing requirement, as can be seen here, only move a burner blower and can meet two cover mill coal drying systems fully.But original designly for a set of mill coal drying system, can only meet vapourizing furnace fully loaded 70%, most time needs two coal pulverizers to move simultaneously, be designed to a Fans for a set of mill coal drying system, obviously power is crossed Sheng, serious waste of resources, and when the burner blower fault, due to impeller demolition more difficult (fan shaft and impeller are shrink-fit), repair time 8 hours or more than, maintenance process takes time and effort, and the repair time was over 8 hours, single cover coal mill system just can not meet the vapourizing furnace heavy-duty service, must load shedding production, be unfavorable for like this production control.
The utility model content
For solving the above-mentioned technical problem existed in prior art, the utility model aim to provide a kind of simple in structure, maintenance is convenient, cost is low, possess the mill coal drying system of the parallel-connection structure that list/dual system freely switches.
The utility model is realized by the following technical solutions:
A kind of mill coal drying system of parallel-connection structure, comprise the blower fan A connected by airduct A, the A series work system that hotblast stove A forms, the blower fan B connected by airduct B, the serial work system of B that hotblast stove B forms; Between described airduct A and airduct B, be installed communicating pipe.
Described communicating pipe is provided with butterfly valve C.
The exit of described blower fan A and blower fan B is respectively equipped with butterfly valve A and butterfly valve B.
The beneficial effects of the utility model:
Compared with prior art, the mill coal drying system of a kind of parallel-connection structure that the utility model provides increases a pipe connecting between two dehumidification systems, realizes that one of dual system opens standby in parallel a use; Simultaneously in the outlet of every Fans, a butterfly valve is set with being communicated with between the mouth of pipe, in order to switch the blower fan use.And then the parallel connection that has realized two dehumidification systems is used, only need to start a system and can provide dry-heat air for two cover coal pulverizers, a large amount of electric resources have been saved, cost significantly reduces, and when a system breaks down, can switch in time the maintenance that another system works on and carries out failure system, significantly shorten the maintenance duration, production schedule is unaffected.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-blower fan A, 2-butterfly valve A, 3-airduct A, 4-hotblast stove A, 5-hotblast stove B, 6-airduct B, 7-butterfly valve B, 8-blower fan B, 9-communicating pipe, 10-butterfly valve C.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further, but that desired protection domain is not limited to is described;
As shown in Figure 1, the mill coal drying system of a kind of parallel-connection structure that the utility model provides, comprise the blower fan A1 connected by airduct A3, the A series work system that hotblast stove A4 forms, the blower fan B8 connected by airduct B6, the serial work system of B that hotblast stove B5 forms; Between described airduct A3 and airduct B6, be installed communicating pipe 9.
For the switching that realizes list/dual system, use, described communicating pipe 9 is provided with butterfly valve C10.
In order to switch blower fan, use, the exit of described blower fan A1 and blower fan B8 is respectively equipped with butterfly valve A2 and butterfly valve B7.
Embodiment: when dual system is worked, close butterfly valve C10 simultaneously, start blower fan A1, hotblast stove A4 and blower fan B8, the hotblast stove B5 of A series work system and B series work system, each workspace provides dry-heat air for a set of coal pulverizer separately.
During monophyly work, open butterfly valve A2 and butterfly valve C10, close butterfly valve B7, start blower fan A1 and hotblast stove A4 in A series work system, A series work system can provide dry-heat air for two cover coal pulverizers.If when the blower fan A1 of A series work system breaks down, close blower fan A1 and butterfly valve A2, start blower fan B8 and butterfly valve B7, it is the completion system switching, now get final product the A series work system of trouble shooting, two cover coal pulverizers work on, thereby the generation progress is unaffected.
Claims (3)
1. the mill coal drying system of a parallel-connection structure, comprise by airduct A(3) the blower fan A(1 that connects), hotblast stove A(4) forms A series work system, by airduct B(6) the blower fan B(8 that connects), hotblast stove B(5) the serial work system of B that forms, it is characterized in that: described airduct A(3) and airduct B(6) between communicating pipe (9) is installed.
2. the mill coal drying system of parallel-connection structure according to claim 1, it is characterized in that: described communicating pipe (9) is provided with butterfly valve C(10).
3. the mill coal drying system of parallel-connection structure according to claim 1 is characterized in that: described blower fan A(1) with blower fan B(8) exit be respectively equipped with butterfly valve A(2) and butterfly valve B(7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320318756 CN203360397U (en) | 2013-06-04 | 2013-06-04 | Coal mill drying systems adopting parallel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320318756 CN203360397U (en) | 2013-06-04 | 2013-06-04 | Coal mill drying systems adopting parallel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203360397U true CN203360397U (en) | 2013-12-25 |
Family
ID=49808189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320318756 Expired - Lifetime CN203360397U (en) | 2013-06-04 | 2013-06-04 | Coal mill drying systems adopting parallel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203360397U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215091A (en) * | 2016-03-22 | 2017-09-29 | 滕炳炎 | Environment-friendly type ink printing ink intaglio printing product furnace drying method, drying unit and printing machine |
| CN110617715A (en) * | 2019-10-14 | 2019-12-27 | 云南德胜钢铁有限公司 | Hot blast stove high-temperature waste gas recycling method |
| CN111741913A (en) * | 2018-02-23 | 2020-10-02 | 三菱日立电力系统株式会社 | Powder supply hopper pressurizing device, gasification furnace facility, gasification combined power generation facility, and method for controlling powder supply hopper pressurizing device |
-
2013
- 2013-06-04 CN CN 201320318756 patent/CN203360397U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215091A (en) * | 2016-03-22 | 2017-09-29 | 滕炳炎 | Environment-friendly type ink printing ink intaglio printing product furnace drying method, drying unit and printing machine |
| CN111741913A (en) * | 2018-02-23 | 2020-10-02 | 三菱日立电力系统株式会社 | Powder supply hopper pressurizing device, gasification furnace facility, gasification combined power generation facility, and method for controlling powder supply hopper pressurizing device |
| CN111741913B (en) * | 2018-02-23 | 2022-06-07 | 三菱动力株式会社 | Powder supply hopper pressurizing device, gasification furnace facility, gasification combined power generation facility, and method for controlling powder supply hopper pressurizing device |
| CN110617715A (en) * | 2019-10-14 | 2019-12-27 | 云南德胜钢铁有限公司 | Hot blast stove high-temperature waste gas recycling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |