CN209371296U - A kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver - Google Patents
A kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver Download PDFInfo
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- CN209371296U CN209371296U CN201920009392.6U CN201920009392U CN209371296U CN 209371296 U CN209371296 U CN 209371296U CN 201920009392 U CN201920009392 U CN 201920009392U CN 209371296 U CN209371296 U CN 209371296U
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- boiler
- pulverized
- coal fired
- air duct
- hot wind
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Abstract
The utility model belongs to coal-burning boiler energy-saving technical field, disclose a kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver, primary female air hose of more pulverized-coal fired boilers passes sequentially through the connection of contact air duct, the both ends in the contact air duct between adjacent two pulverized-coal fired boilers are provided with sealed valve, are provided with air-quantity adjusting valve between two sealed valves；The utility model makes primary female air hose of more pulverized-coal fired boilers be interconnected using contact air duct, when pulverized-coal fired boiler is from cold start, conveys adjacent furnace hot wind, the energy needed when providing boiler startup using contact air duct；When boiler at low load operation, adjacent furnace hot wind still is conveyed using contact air duct, more boilers share a boiler fan, reduce station service power consumption rate；Or the heat primary air mixing proportion of a boiler is improved, drying capacity of pulverizer is improved, boiler efficiency is improved；When boiler deactivates, adjacent furnace hot wind still is conveyed using contact air duct, drying heating surface condenses moisture, keeps metal surface dry, avoids corroding.
Description
Technical field
The utility model belongs to coal-burning boiler energy-saving technical field, and in particular to a kind of pulverized-coal fired boiler neighbour furnace hot wind energy conservation dress
It sets.
Background technique
In the design of coal-burning boiler air and gas system, heat primary air system is generallyd use, heat primary air can carry coal-fired feeding furnace
Thorax, preferably to organize the coal-fired burning in burner hearth.When there is more boilers arranged side by side, the air and gas system and this pot of separate unit boiler
The other systems of furnace form individual system, are not associated between the air and gas system of each boiler, are also in the control mode of each boiler
Every boiler controls respectively, is not associated with other boilers.When boiler startup, the cigarette wind of boiler need to be set with a large amount of energy
The preheating such as standby, coal combustion equipment, makes the temperature of these equipment pipes be heated to needed for hot operation 100-300 DEG C from room temperature.Mesh
Before, the pre-heating device that these energy are equipped with from every boiler itself, when put into operation these pre-heating devices when generally consume fuel oil
Or steam, and it is long the time required to boiler startup, it is at present 10-30 hours；After start-up course, the cigarette wind of every boiler
System also keeps separate unit boiler independent operating, and operating load is in 30%-100%, it is meant that minimum stable operating load rate is
30% or so, boiler load factor is unable to reach for 20% or lower, and boiler efficiency is lower when boiler at low load operation, factory
Power consumption rate is high.After boiler deactivates completely, since structure is complicated for superheater and reheater etc. in boiler, it is not easy to by superheater and
Whole water are put only in reheater, and metal surface has condensed water when equipment is stored for a long time, and condensed water leads to metal erosion, in order to anti-
Only metal erosion, it is necessary to take measures to be handled.
Utility model content
Of the existing technology in order to solve the problems, such as, the utility model provides a kind of pulverized-coal fired boiler neighbour furnace hot wind energy conservation dress
It sets, has energy-saving effect good, good economy performance builds the features such as simple with improvement project, and technical solution is as follows:
A kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver, including contact air duct, primary female air hoses of more pulverized-coal fired boilers it
Between pass sequentially through the connection of contact air duct, the both ends in the contact air duct between adjacent two pulverized-coal fired boilers are provided with sealed valve,
Air-quantity adjusting valve is provided between two sealed valves.
The cross-sectional area in the contact air duct is less than or equal to the cross-sectional area of First air main pipe.
Compared with prior art, the utility model has the beneficial effects that
The utility model is applied to more pulverized-coal fired boilers of paired running, makes the one of more pulverized-coal fired boilers using contact air duct
Secondary mother's air hose is interconnected, and when pulverized-coal fired boiler is from cold start, conveys adjacent furnace hot wind using contact air duct, provides boiler and open
The energy needed when dynamic；When boiler at low load operation, adjacent furnace hot wind still is conveyed using contact air duct, more boilers share one
Platform boiler fan reduces station service power consumption rate；Or the heat primary air mixing proportion of a boiler is improved, it improves coal pulverizer and dries out
Power improves boiler efficiency；When boiler deactivates, adjacent furnace hot wind still is conveyed using contact air duct, drying heating surface condenses moisture,
It keeps metal surface dry, avoids corroding.Using utility model device, can not be put into the air and gas system of a coal-burning boiler
Energy is obtained from adjacent furnace air and gas system under conditions of other energy and completes boiler cold-state starting, can be improved the hot fortune of coal-burning boiler
Row stability reduces operation power consumption, energy saving.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Wherein: the primary female air hose of 1- this pulverized-coal fired boiler；2- is adjacent to the primary female air hose of pulverized-coal fired boiler；3- gets in touch with air duct；4- is close
Seal valve；5- control valve
Specific embodiment
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
As shown in Figure 1, the utility model provides a kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver, including contact air duct 3,
It passes sequentially through contact air duct 3 between primary female air hose of more pulverized-coal fired boilers to be connected to, the contact between adjacent two pulverized-coal fired boilers
The both ends in air duct 3 are provided with sealed valve 4, are provided with air-quantity adjusting valve 5 between two sealed valves 4.
The cross-sectional area in the contact air duct 3 is less than or equal to the cross-sectional area of First air main pipe.
When the neighbouring hot operation of pulverized-coal fired boiler, this pulverized-coal fired boiler from when cold start, using the conveying of contact air duct 3 come
Adjacent furnace hot wind provides starting when institute calorific requirement, preheats the air and gas system of this pulverized-coal fired boiler, makes setting for this pulverized-coal fired boiler air and gas system
Standby and pipe temperature gradually rises.
The specific operation method is as follows, when use open this pulverized-coal fired boiler once female air hose 1 with it is once female adjacent to pulverized-coal fired boiler
Two sealed valves 4 on contact air duct 3 between air hose 2, and pass through control contact 3 upper air volume control valve of air duct, 5 aperture
Come control this pulverized-coal fired boiler air and gas system equipment and pipeline temperature rise rate in claimed range, when equipment pipe is warming up to cigarette wind
The hot service condition of system, the equipment for this pulverized-coal fired boiler air and gas system that gradually puts into operation, completes the cold start of this pulverized-coal fired boiler.When
After this pulverized-coal fired boiler completes cold start, air-quantity adjusting valve 5 is closed, two sealed valves 4 are closed, then keeps two boilers
Hot operation respectively.
When neighbouring pulverized-coal fired boiler and this pulverized-coal fired boiler require to keep underrun, still using contact air duct 3
Adjacent furnace hot wind is conveyed, more boilers share a boiler fan.
The specific operation method is as follows, before use, neighbouring pulverized-coal fired boiler and the normal hot operation of this pulverized-coal fired boiler holding, make
Used time opens this pulverized-coal fired boiler once female air hose 1 and two got in touch on air duct 3 between pulverized-coal fired boiler once female air hose 2
A sealed valve 4, gradually opens Wind Volume control valve 5, while neighbouring pulverized-coal fired boiler primary air flow is gradually turned up, while turning down this
Pulverized-coal fired boiler primary air flow closes the primary air fan of this pulverized-coal fired boiler when the primary air fan of this pulverized-coal fired boiler can close.Make
Two pulverized-coal fired boilers share the primary air fan of a boiler, reduce boiler operatiopn electrisity consumption.
When boiler fired coal moisture deviation design coal is larger, when leading to pulverized coal preparation system drying capacity deficiency, using contact
Air duct 3 conveys adjacent furnace hot wind, improves the heat primary air mixing proportion of this pulverized-coal fired boiler, improves drying capacity of pulverizer, improves pot
The efficiency of furnace.
The specific operation method is as follows, in use, opening this pulverized-coal fired boiler, once female air hose 1 and neighbouring pulverized-coal fired boiler are once female
Two sealed valves 4 on contact air duct 3 between air hose 2, gradually open Wind Volume control valve 5, while being gradually turned up neighbouring
Pulverized-coal fired boiler primary air flow, this pulverized-coal fired boiler First air still keep high air quantity, turn down coal pulverizer inlet cold wind air quantity, make coal pulverizer
Increase is compared in the blending of entrance heat primary air, and pulverizer outlet temperature improves, and improves drying capacity of pulverizer, improves boiler efficiency.
When boiler deactivates, adjacent furnace hot wind still is conveyed using contact air duct 3, dries up the condensation of this pulverized-coal fired boiler heating surface
Moisture keeps metal surface dry, avoids corroding.
Above embodiments are only to illustrate the technical solution of the utility model rather than its limitations, although referring to above-mentioned implementation
The utility model is described in detail in example, and the those of ordinary skill in field is it is understood that still can be to the utility model
Specific embodiment be modified or replaced equivalently, and any modification without departing from the spirit and scope of the utility model or
Equivalent replacement should all cover in present claims range.
Claims (2)
1. a kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver, which is characterized in that including getting in touch with air duct, more pulverized-coal fired boilers it is primary
The connection of contact air duct is passed sequentially through between female air hose, the both ends in the contact air duct between adjacent two pulverized-coal fired boilers are provided with close
Valve is sealed, is provided with air-quantity adjusting valve between two sealed valves.
2. a kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver according to claim 1, which is characterized in that the contact air duct
Cross-sectional area be less than or equal to First air main pipe cross-sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920009392.6U CN209371296U (en) | 2019-01-03 | 2019-01-03 | A kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920009392.6U CN209371296U (en) | 2019-01-03 | 2019-01-03 | A kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209371296U true CN209371296U (en) | 2019-09-10 |
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ID=67829147
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920009392.6U Active CN209371296U (en) | 2019-01-03 | 2019-01-03 | A kind of pulverized-coal fired boiler neighbour furnace hot wind energy saver |
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| CN (1) | CN209371296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112295677A (en) * | 2020-08-28 | 2021-02-02 | 华电电力科学研究院有限公司 | System and method for realizing cold-state quick start of steel ball coal mill |
-
2019
- 2019-01-03 CN CN201920009392.6U patent/CN209371296U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112295677A (en) * | 2020-08-28 | 2021-02-02 | 华电电力科学研究院有限公司 | System and method for realizing cold-state quick start of steel ball coal mill |
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