CN211372384U - Fly ash remelting device for industrial pulverized coal boiler - Google Patents
Fly ash remelting device for industrial pulverized coal boiler Download PDFInfo
- Publication number
- CN211372384U CN211372384U CN201921440165.5U CN201921440165U CN211372384U CN 211372384 U CN211372384 U CN 211372384U CN 201921440165 U CN201921440165 U CN 201921440165U CN 211372384 U CN211372384 U CN 211372384U
- Authority
- CN
- China
- Prior art keywords
- fly ash
- air suction
- suction pipeline
- reduced
- pulverized coal
- Prior art date
- 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.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of thermal equipment, in particular to a fly ash remelting device for an industrial pulverized coal boiler, which comprises a blanking hopper and a bin pump which are connected up and down, wherein the upper end of a gate valve (1) between the blanking hopper and the bin pump is connected with an air suction pipeline (4), the air suction pipeline (4) is directly connected into a secondary air pipe for secondary utilization, and the middle of the air suction pipeline (4) is provided with a connector (2) connected with an oxidation fan; after the fly ash remelting system is used for operation, the generated fly ash is greatly reduced, the flying dust is reduced, the working environment is improved, and the working intensity is reduced; the technology also brings economic benefits, saves fire coal, improves the quality of ash and increases the income of selling slag. The desulfurization efficiency is also improved, the investment of gypsum is reduced, the environmental pollution is reduced, and the method has good environmental benefit.
Description
Technical Field
The utility model belongs to the technical field of thermodynamic equipment, especially, relate to a flying dust remelting device for industrial pulverized coal boiler.
Background
After the high-efficiency pulverized coal industrial boiler is put into use, the combustible content of the boiler fly ash is found to be more than 10%. The original mode is that the fly ash of the boiler is directly conveyed to an ash storehouse after being dedusted by a cloth bag and is transported out. The generated fly ash and the fly ash required by the construction site can not be used for building construction, which not only causes the waste of energy, but also causes certain pollution to the environment; therefore, a device for collecting and utilizing the fly ash in the boiler needs to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a problem among the above-mentioned background of effectual solution has proposed a flying dust remelting device for industry pulverized coal boiler, and concrete technical scheme is as follows:
the utility model provides a flying dust remelting device for industry pulverized coal boiler, includes blanking hopper and storehouse pump of connecting from top to bottom, between blanking hopper and the storehouse pump and be located the upper end of push-pull valve (1) and connect through air suction pipeline (4), in air suction pipeline (4) direct switch-on was used for the overgrate air pipe of reutilization, and was equipped with interface (2) of connecting the oxidation fan in the middle of air suction pipeline (4).
Preferably, a gate valve (3) is arranged on the air suction pipeline (4) at the front end of the interface (2);
compared with the prior art, the beneficial effects of the utility model reside in that: after the fly ash remelting system is used for operation, the generated fly ash is greatly reduced, the flying dust is reduced, the working environment is improved, and the working intensity is reduced; the technology also brings economic benefits, saves fire coal, improves the quality of ash and increases the income of selling slag. The desulfurization efficiency is also improved, the investment of gypsum is reduced, the environmental pollution is reduced, and the method has good environmental benefit.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the technical personnel in the technical field understand the scheme of the invention better, the invention is further explained in detail with the attached drawings and the embodiment;
a fly ash remelting device for an industrial pulverized coal boiler comprises a blanking hopper and a bin pump which are connected up and down, wherein an air suction pipeline 4 is connected between the blanking hopper and the bin pump and positioned at the upper end of a gate valve 1, the air suction pipeline 4 is directly connected into a secondary air pipe for secondary utilization, and a connector 2 connected with an oxidation fan is arranged in the middle of the air suction pipeline 4; a gate valve 3 is arranged on an air suction pipeline 4 at the front end of the connector 2;
the utility model aims at providing a flying ash remelting device introduces a flying ash remelting technology. The dry fly ash (containing a certain amount of fly ash combustible substances and the content of the fly ash is more than 10%) captured from an ash bucket of a dust collector at the tail of the boiler is conveyed back to a high-temperature region of a hearth by a pneumatic conveying device, so that the combustible substances in the fly ash are subjected to secondary combustion, the heat of the fly ash is recovered, the boiler can save coal, the fly ash is absorbed and melted in the hearth to become fly ash with better granularity and even disappear, and the fly ash is dedusted by a cloth bag and enters an ash storehouse, so that the ash quality is improved, and a certain amount of coal is saved.
The specific technical scheme is as follows: a DN80 pipeline is divided above the discharge valve of the ash hopper, the manual gate valve and the variable-frequency rotary discharge are arranged on the pipeline to control the discharge amount and connect with the oxidation fan of the desulfurization system (the original oxidation fan is used for two, and the re-melting device is used for two after installation), and the pipeline is connected with the secondary air pipe through the pneumatic ash conveying device and sent into the hearth for secondary combustion. The designed capacity is 1 t/h.
B, actual coal consumption of the boiler, t/h;
a-mass fraction of ash contained in fuel,%;
alk-boiler slag capturing rate. Percent;
psi-dust collector efficiency,%;
cfh-mass fraction of carbon in fly ash
194.2-calorific value of pure carbon, kJ/kg;
qd is the low-level calorific value of the fuel entering the furnace, kJ/kg;
v-boiler hourly flue gas volume, m3/h
P1-Fuel price, Yuan/t
"coal-saving effect
￥＝B×A×(1-alk)×ψ×Cfh×8100/Qd×H×P1
7.5 × 13.3% × 50% × 95% × 5% × 8100/5500 × 700 × 3600 ═ 87922 units
The time of the heating season is 6 months, the boiler operation time is calculated according to 5 months, and the fund can be saved by 87922 yuan. Meanwhile, the benefits brought by improving the desulfurization efficiency are ignored. By adding the device, the boiler has more benefits.
In order to prevent the fly ash remelting technology from having adverse effects on the combustion of a boiler, continuous test runs and tests show that the rotating speed of a feeder is kept unchanged under the conditions of normal combustion and smooth combustion of the boiler, an induced draft fan is slightly adjusted, the fly ash remelting device is used for conveying ash into a hearth for a long time, the adverse effects on the combustion of the original boiler are not caused, and when the ash conveying amount is 1t/h, parameters such as the load of the boiler, the negative pressure of the hearth, the water outlet temperature and the like basically do not fluctuate abnormally. Can reduce part of the SO2 in the flue gas and improve the desulfurization efficiency.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The utility model provides a flying dust remelting device for industry pulverized coal boiler, includes blanking hopper and storehouse pump of connecting from top to bottom, its characterized in that, between blanking hopper and the storehouse pump and be located the upper end of first push-pull valve (1) and connect through air suction pipeline (4), in air suction pipeline (4) direct switch-on was used for the overgrate air pipe of reutilization, and was equipped with interface (2) of connecting the oxidation fan in air suction pipeline (4) centre.
2. The fly ash remelting device for industrial pulverized coal boilers according to claim 1, characterized in that a second gate valve (3) is arranged on the air suction pipeline (4) at the front end of the interface (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440165.5U CN211372384U (en) | 2019-08-30 | 2019-08-30 | Fly ash remelting device for industrial pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440165.5U CN211372384U (en) | 2019-08-30 | 2019-08-30 | Fly ash remelting device for industrial pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211372384U true CN211372384U (en) | 2020-08-28 |
Family
ID=72172045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921440165.5U Active CN211372384U (en) | 2019-08-30 | 2019-08-30 | Fly ash remelting device for industrial pulverized coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211372384U (en) |
-
2019
- 2019-08-30 CN CN201921440165.5U patent/CN211372384U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102418920B (en) | Circulating fluidized bed power generating boiler capable of blended combustion of industrial waste residues | |
| CN103486867A (en) | Bypass process and system for cement kiln | |
| CN205174413U (en) | Boiler smoke whirlwind separation recycle device | |
| CN211372384U (en) | Fly ash remelting device for industrial pulverized coal boiler | |
| CN105727731A (en) | Desulfurization system and desulfurization method for improving boiler efficiency | |
| CN202555128U (en) | Equipment for desulfurizing in boiler by using semidry process desulfurization ash | |
| CN211198619U (en) | Energy-conserving efficient carbide production system | |
| CN212005750U (en) | Flue gas recycle buggy preparation system | |
| CN210441220U (en) | CFB boiler coal-fired coupling processing line to combustible solid waste | |
| CN103896501A (en) | Kiln tail ventilation system and kiln tail ventilation process of lime production line | |
| CN201811263U (en) | Full N2 circulation equipment for preparing soft coal powder | |
| CN201666738U (en) | Pre-heated one section waste flue gas afterheat utilizing system of pellet grate machine | |
| CN110813504A (en) | Blast furnace coal injection and pulverization system with drying furnace removed and working method thereof | |
| CN204648986U (en) | A kind of board-like pair of preheater process system for gas burning lime kiln | |
| CN212457975U (en) | Wet material system of blue charcoal of high-efficient stoving of limekiln tail gas waste heat | |
| CN211502859U (en) | Waste heat recovery device of heat supply equipment using biomass crushed aggregates as fuel | |
| CN105485706A (en) | Boiler smoke cyclone separation recycling device and smoke recycling method thereof | |
| CN202733926U (en) | Recycling system for chain-conveyer furnace fly ash | |
| CN213866088U (en) | Gasifier fly ash recirculation system capable of recycling coal gas | |
| CN211041857U (en) | Cement kiln bypass air discharge waste heat flue gas utilization device | |
| CN201935585U (en) | Sintering system for back burning sintered ores in cooler high-temperature section using smoke from big gas duct of sintering machine | |
| CN204114896U (en) | The coal of fan mill and air swept mill powder process and the green electricity generation system of coal slime multifuel combustion | |
| CN209537592U (en) | A kind of accumulation of heat vertical high temperature vacuum metal calcium smelting furnace | |
| CN205897122U (en) | Circulating fluidized bed boiler fly ash recycle system | |
| CN212157136U (en) | Bed material recycling device in circulating fluidized bed boiler operation process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |