CN203131783U - Split type boiler for recovering yellow phosphorous tail gas waste heat - Google Patents
Split type boiler for recovering yellow phosphorous tail gas waste heat Download PDFInfo
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- CN203131783U CN203131783U CN 201320051555 CN201320051555U CN203131783U CN 203131783 U CN203131783 U CN 203131783U CN 201320051555 CN201320051555 CN 201320051555 CN 201320051555 U CN201320051555 U CN 201320051555U CN 203131783 U CN203131783 U CN 203131783U
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- tail gas
- cooling system
- water cooling
- convection bank
- boiler
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Abstract
The utility model relates to a split type boiler for recovering yellow phosphorous tail gas waste heat. More than 80% yellow phosphorous tail gas of yellow phosphorous production enterprises is directly exhausted to the atmosphere currently, and a large amount of energy and resource waste and serious environment pollution occur. The split type boiler for recovering the yellow phosphorous tail gas waste heat comprises a coal economizer, one side of the coal economizer is connected with a hearth water cooling system and a convection bank which are arranged in a parallel mode through a smoke channel, heat insulating layers are arranged on the outer side of the hearth water cooling system and the outer side of the convection bank, a superheater is arranged between the hearth water cooling system and the convection bank through a steel frame, a steam inlet of the hearth water cooling system is connected with an upper boiler tube of the convection bank through a steam outlet pipe, and a lower header of the hearth water cooling system is connected with a lower boiler tube of the convection bank through a centralized downcomer. The split type boiler for recovering the yellow phosphorous tail gas waste heat directs at remaining corrosive impurities in yellow phosphorous tail gas, special processing measures are taken in a heated surface of the boiler to guarantee safe and stable operation of the boiler, the structure is simple, mounting is convenient, and operating and repairing are convenient.
Description
Technical field
The utility model relates to a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat.
Background technology
China is phosphorus production big country, and phosphorus production enterprise is the highly energy-consuming rich and influential family, will produce a large amount of tail gas that contains CO in the phosphorus production, and one ton of yellow phosphorus of every production will by-product 2500～3000m
3Tail gas, the content of CO is generally all more than 80% in the tail gas, and so huge tail gas amount all is directly to enter in the atmosphere at present more than 80% in these enterprises, has caused the very big energy, and the waste of resource and serious environmental are polluted.Along with implementing and reinforcement of Environment Protection Policy, tail gas recycle is utilized imperative, and is related to the survival and development of enterprise.
The yellow phosphoric tail gas basic reason that do not have well to recycle is tail gas recycle purification techniques complexity for many years, and the big and boiler dedicated operation stability of yellow phosphoric tail gas of investment is not resolved.Conventional SZS type of furnace burner hearth is made up of water-cooling wall, its afterbody is furnished with superheater, convection bank is (or right) side layout in a burner hearth left side, its version has determined must in bulk dispatching from the factory, installation workload is big, and complex process, the conventional SZS type of furnace generally are used for coal combustion or natural gas, etchant gas amount in the flue gas is slight controlled to the corrosion of heating surface seldom.And yellow phosphoric tail gas is a kind of fuel gas that contains corrosive impurity, and directly the SZS boiler with routine burns, and boiler heating surface just is perforated booster in the time of short three months even one month, and whole boiler is forced to scrap and causes enormous economic loss.
The utility model content
The purpose of this utility model provides a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, it is at residual corrosive impurity in the yellow phosphoric tail gas, boiler heating surface need take special technological measure to guarantee the safe and stable operation of boiler, and simple in structure, easy for installation, operating maintenance is convenient.
For achieving the above object, the technical scheme that the utility model provides is: a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, comprise economizer, it is characterized in that: a side of described province coal is connected with furnace water cooling system and the convection bank that be arranged in parallel by flue, the outside bag of described furnace water cooling system and convection bank is provided with heat-insulation layer, be provided with superheater by steelframe between described furnace water cooling system and the convection bank, the venthole of described furnace water cooling system and the upper drum of convection bank are connected by fairlead, and described furnace water cooling is that 1 next part case and the lower drum of convection bank are connected by common downcomer 11.
In the described furnace water cooling system burner is set.
Described superheater is provided with inspection door and explosion proof door.
Described superheater comprises superheater inlet header case, attemperator and super-heater exit case.
Also be provided with the lattice revetment in the described furnace water cooling system.
Be provided with the steam fairlead between described superheater and the convection bank.
Compared with prior art, the utility model has the advantages that: the utility model is simple in structure, has realized boiler safety stable operation, can prevent the high temperature corrosion of yellow phosphoric tail gas through the membrane wall burner hearth of spray treatment; The disturbance wall can increase the time of staying to the further disturbance of unburnt flue gas that enters before the superheater, pernicious gas is tackled further completing combustion, the safe operation of protection superheater; The monitoring of daily extent of corrosion and maintenance repair that superheater independently is arranged as boiler provide convenience, and split-type structural is that boiler is assembled to dispatch from the factory and provided convenience, and has shortened installation period.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is vertical view of the present utility model;
Description of reference numerals: 1-furnace water cooling system, 2-superheater, 3-convection bank, 4-flue, 5-economizer, 6-exhanst gas outlet, 7-steelframe, 8-inspection door, 9-explosion proof door, 10-burner, 11-common downcomer, 12-fairlead, 13-steam fairlead, 14-lattice revetment, 15-heat-insulation layer.
The specific embodiment
A kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, comprise economizer 5, one side of described economizer 5 is connected with furnace water cooling system 1 and the convection bank 3 that be arranged in parallel by flue 4, the outside bag of described furnace water cooling system 1 and convection bank 3 is provided with heat-insulation layer 15, be provided with superheater 2 by steelframe 7 between described furnace water cooling system 1 and the convection bank 3, described superheater 2 comprises superheater inlet header case, attemperator and super-heater exit case, is provided with steam fairlead 13 between described superheater 2 and the convection bank 3.The venthole of described furnace water cooling system 1 and the upper drum of convection bank 3 are connected by fairlead 12, the next part case of described furnace water cooling system 1 and the lower drum of convection bank 3 are connected by common downcomer 11, also be provided with lattice revetment 14 in the described furnace water cooling system 1, in the described furnace water cooling system 1 burner 10 is set, described superheater 2 is provided with inspection door 8 and explosion proof door 9.
Each big parts of the utility model are independently arranged, flexible for installation, yellow phosphoric tail gas from the phosphorus production line is fully organized burning through burner 10, fuel fully burns simultaneously the heat transferred furnace wall cooling in furnace water cooling system 1, the flue gas of this moment is high-temperature flue gas, temperature can be up to 1000 ℃, high-temperature flue gas enters superheater 2 from the burner hearth afterbody to be continued heat is passed to heating surface, export the convection bank that enters in the convection bank 3 by superheater 2, heat release drops to flue-gas temperature below 300 ℃ in convection bank, and low-temperature flue gas at this moment enters the feedwater of economizer 5 heating boilers through connecting flue 4.Flue gas through economizer 5 enters atmosphere after air-introduced machine enters chimney.The flow process of boiler circuit is that boiler feedwater enters economizer 5 enters convection bank 3 after flue gas heating upper drum and enters lower drum through convection bank through down-comer and enter furnace water cooling system 1 next part case through common downcomer 11, the heat that absorbs high-temperature flue gas in burner hearth becomes saturated vapor and enters upper collecting chamber and enter upper drum again by fairlead 12, the saturated vapor of upper drum enters superheater 2 through saturated vapor fairlead 13, and the heat in the absorption high-temperature flue gas becomes qualified superheated steam and enters the generating of steam turbine work done pushing generator through superheater outlet collection case.
Claims (6)
1. divided boiler that be used for to reclaim the yellow phosphoric tail gas waste heat, comprise economizer (5), it is characterized in that: a side of described economizer (5) is connected with furnace water cooling system (1) and the convection bank (3) that be arranged in parallel by flue (4), the outside bag of described furnace water cooling system (1) and convection bank (3) is provided with heat-insulation layer (15), be provided with superheater (2) by steelframe (7) between described furnace water cooling system (1) and the convection bank (3), the upper drum of the venthole of described furnace water cooling system (1) and convection bank (3) is connected by fairlead (12), and the lower drum of the next part case of described furnace water cooling system (1) and convection bank (3) is connected by common downcomer (11).
2. according to claim 1 a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, it is characterized in that: burner (10) is set in the described furnace water cooling system (1).
3. according to claim 1 and 2 a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, it is characterized in that: described superheater (2) is provided with inspection door (8) and explosion proof door (9).
4. according to claim 3 a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, it is characterized in that: described superheater (2) comprises superheater inlet header case, attemperator and super-heater exit case.
5. according to claim 4 a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, it is characterized in that: also be provided with lattice revetment (14) in the described furnace water cooling system (1).
6. according to claim 5 a kind of for the divided boiler that reclaims the yellow phosphoric tail gas waste heat, it is characterized in that: be provided with steam fairlead (13) between described superheater (2) and the convection bank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051555 CN203131783U (en) | 2013-01-30 | 2013-01-30 | Split type boiler for recovering yellow phosphorous tail gas waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051555 CN203131783U (en) | 2013-01-30 | 2013-01-30 | Split type boiler for recovering yellow phosphorous tail gas waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203131783U true CN203131783U (en) | 2013-08-14 |
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ID=48939757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320051555 Expired - Fee Related CN203131783U (en) | 2013-01-30 | 2013-01-30 | Split type boiler for recovering yellow phosphorous tail gas waste heat |
Country Status (1)
| Country | Link |
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| CN (1) | CN203131783U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030539A (en) * | 2019-05-14 | 2019-07-19 | 李国� | Carbonize tail gas waste gas of incineration boiler, charring process system |
-
2013
- 2013-01-30 CN CN 201320051555 patent/CN203131783U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030539A (en) * | 2019-05-14 | 2019-07-19 | 李国� | Carbonize tail gas waste gas of incineration boiler, charring process system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20200130 |