CN202973047U - Fine pulverized coal firing industrial steam boiler - Google Patents
Fine pulverized coal firing industrial steam boiler Download PDFInfo
- Publication number
- CN202973047U CN202973047U CN 201220569632 CN201220569632U CN202973047U CN 202973047 U CN202973047 U CN 202973047U CN 201220569632 CN201220569632 CN 201220569632 CN 201220569632 U CN201220569632 U CN 201220569632U CN 202973047 U CN202973047 U CN 202973047U
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- steam boiler
- boiler
- industrial steam
- convection
- pulverized coal
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Abstract
The utility model provides a fine pulverized coal firing industrial steam boiler, and belongs to the technical field of pulverized coal fuel boilers. The industrial steam boiler aims at applying a pulverized coal firing technology on the industrial steam boiler, and comprises a drum, a hearth (2), a convection pass, as well as an upper coal economizer, an upper air preheater, a lower coal economizer and a lower air preheater that are sequentially arranged in a perpendicular section of the convection pass. The industrial steam boiler is characterized in that a flame folding wall and a screen tube (1) are arranged at the upper part of a rear wall in the hearth (2); two burners (4) are arranged in parallel at the middle lower parts of two side walls of the hearth respectively; and a convection bank (3) is arranged in a horizontal section of the convection pass. With the adoption of the structure, firing of the boiler is high-efficiency and stable.
Description
Technical field
The utility model belongs to Pulverized Coal boiler technology field, is specifically related to fine coal powder burning industrial steam boiler.
Background technology
Along with the development that the high-efficiency pulverized coal boiler is advanced by leaps and bounds, middle-size and small-size pulverized-coal fired boiler plays an increasingly important role.It can not only satisfy district heating, also can satisfy industrial and mining enterprises' process steam simultaneously.Fine coal powder burning industrial steam boiler is exactly a kind of New-type boiler.The development of this boiler has taken into full account the superiority of this coal of boiler combustion, and integral arrangement is compact and attractive in appearance, is a kind of industrial steam boiler that can satisfy fine coal powder smooth combustion and design.
The coal-burned industrial boiler of knowing at present mainly comprises grate firing boiler and recirculating fluidized bed bed boiler.Wherein, grate firing boiler refers to that certain thickness fuel bed is at the boiler of the upper burning of fire grate (or claiming fire grate), also referred to as the grate stove.CFBB is the raw coal fragmentation to be become a certain size particle, utilizes the combustion system of air distribution plate air distribution cap, makes coal suspension combustion on air distribution plate.Grate firing boiler technology maturation, shortcoming are that efficiency of combustion is low, and be seriously polluted.Burning in circulating fluid bed boiler efficient is higher, but power consumption is high, and deslagging is many, and repair rate is high.Especially be applied on Industrial Boiler not too successfully, and the flue gas after-treatment system is complicated, and cost is higher.Therefore, invent this boiler and can reduce industrial and mining enterprises and select the boiler hard problem, simultaneously can fuel saving, environmental contamination reduction.
The fine coal powder burning is one of high performance clean burning mode of coal, and its efficiency of combustion can reach more than 91% usually, and the while, stove inner tissue burnt, and the maintenance task is few.That other combustion system institute is unapproachable.Pulverized coal combustion is also the combustion technology of a maturation, uses quite generally on large-sized station boiler, and long-term history is arranged.Pulverized coal combustion is applied in industrial steam boiler, will improve the efficient of boiler.
Summary of the invention
The purpose of this utility model is to solve the problem that prior art exists, and fine coal powder burning industrial steam boiler is provided.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be:
Fine coal powder burning industrial steam boiler, the higher level's economizer, higher level's air preheater, subordinate's economizer, the subordinate's air preheater that comprise drum, burner hearth, convection pass, arrange successively in the convection pass vertical section is characterized in that: burner hearth inner back wall top is provided with foldede flame wall and crust block pipe; Burner hearth both walls middle and lower part two burners that are arranged in parallel respectively; Be furnished with convection bank in the horizontal segment of convection pass.
The present invention compared with prior art has following beneficial effect:
The utility model can be realized the safe and highly efficient operation of fine coal powder fuel industry steam boiler.Be equipped with relevant cleaner, environment protecting is obvious.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model A is to profile.
In figure: 1-foldede flame wall and crust block pipe; The 2-burner hearth; The 3-convection bank; The 4-burner.
The specific embodiment
As shown in Figure 1, fine coal powder burning industrial steam boiler, the higher level's economizer, higher level's air preheater, subordinate's economizer, the subordinate's air preheater that comprise drum, burner hearth 2, convection pass, arrange successively in the convection pass vertical section are characterized in: burner hearth 2 inner back wall tops are provided with foldede flame wall and crust block pipe 1; As shown in Figure 2, burner hearth both walls middle and lower part two burners 4 that are arranged in parallel respectively; Be furnished with convection bank 3 in the horizontal segment of convection pass.
Adopt the arrangement form of suspension type burner hearth, pedestal convection heating surface.
The course of work and operation principle:
During the utility model work, at first boiler feedwater enters subordinate's economizer, and the heating of sailing against the current enters drum by higher level's economizer through fairlead at last.Moisture two-way through heating carries out heat exchange.The down-comer of leading up to enters the water-cooling wall lower header.Then enter the water-cooled upper collecting chamber by the water-cooling wall heat exchange, enter drum by fairlead at last; Another road enters the lower header of the convection bank of horizontal flue by tube connector, enter upper collecting chamber by convection bank, enters drum by fairlead.Reach so the qualified steam supply user that design is wanted.Whole arrangement form is hung the rear support structure before adopting.Water-cooling wall is hanging structure, and convection bank and economizer adopt supporting construction.
During work, the boiler side wall is respectively arranged two burners, coal dust is in the burner hearth internal combustion, and foldede flame wall and crust block pipe can make in burner hearth flame once transfer and extend the burning time of coal dust in burner hearth, guarantees the burning time of furnace flame and prevents the coking of coal dust.Flue gas by upper furnace after wall flow out, after entering convection pass, pass through successively higher level's economizer, higher level's air preheater, subordinate's economizer, subordinate's air preheater downwards, discharge from the convection pass bottom at last.In this process, at first boiler feedwater enters subordinate's economizer, and the heating of sailing against the current enters drum by higher level's economizer through fairlead at last.Moisture two-way through heating carries out heat exchange.The down-comer of leading up to enters the water-cooling wall lower header.Then enter the water-cooled upper collecting chamber by the water-cooling wall heat exchange, enter drum by fairlead at last; Another road enters the lower header of the convection bank of horizontal flue by tube connector, enter upper collecting chamber by convection bank, enters drum by fairlead.Reach so the qualified steam supply user that design is wanted.Adopt the suspension type burner hearth to add the arrangement form of pedestal convection heating surface, guarantee high efficiency boiler smooth combustion.
Claims (1)
1. fine coal powder burning industrial steam boiler, the higher level's economizer, higher level's air preheater, subordinate's economizer, the subordinate's air preheater that comprise drum, burner hearth (2), convection pass, arrange successively in the convection pass vertical section is characterized in that: burner hearth (2) inner back wall top is provided with foldede flame wall and crust block pipe (1); Burner hearth both walls middle and lower part two burners (4) that are arranged in parallel respectively; Be furnished with convection bank (3) in the horizontal segment of convection pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569632 CN202973047U (en) | 2012-10-31 | 2012-10-31 | Fine pulverized coal firing industrial steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569632 CN202973047U (en) | 2012-10-31 | 2012-10-31 | Fine pulverized coal firing industrial steam boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202973047U true CN202973047U (en) | 2013-06-05 |
Family
ID=48514117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220569632 Expired - Fee Related CN202973047U (en) | 2012-10-31 | 2012-10-31 | Fine pulverized coal firing industrial steam boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202973047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901080A (en) * | 2012-10-31 | 2013-01-30 | 山西蓝天环保设备有限公司 | Fine pulverized-coal combustion industrial steam boiler |
-
2012
- 2012-10-31 CN CN 201220569632 patent/CN202973047U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901080A (en) * | 2012-10-31 | 2013-01-30 | 山西蓝天环保设备有限公司 | Fine pulverized-coal combustion industrial steam boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20161031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |