CN201310872Y - Arrangement structure of waste heat power generation kiln hood evaporator heat exchange tubes - Google Patents
Arrangement structure of waste heat power generation kiln hood evaporator heat exchange tubes Download PDFInfo
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- CN201310872Y CN201310872Y CNU2008200393123U CN200820039312U CN201310872Y CN 201310872 Y CN201310872 Y CN 201310872Y CN U2008200393123 U CNU2008200393123 U CN U2008200393123U CN 200820039312 U CN200820039312 U CN 200820039312U CN 201310872 Y CN201310872 Y CN 201310872Y
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- heat exchanger
- exchanger tube
- boiler
- heat exchange
- exchange tubes
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Abstract
The utility model relates to an arrangement structure of waste heat power generation kiln hood evaporator heat exchange tubes, which is applied to a cement kiln pure low temperature waste heat power generation system. The heat exchange tubes (3) are designed to have a structure forming an included angle with the plane, two ends of the heat exchange tubes (3) are connected with headers (8), over two heat exchange tubes (3) form a structure arranged in parallel and upwards, the optimal value of the included angle of the heat exchange tubes (3) and the plane is set to be 3 DEG, each heat exchange tube (3) is set to be in a structure that the end extending to the left side (4) of a boiler body is higher than the end extending to the right side (5) of the boiler body, and all the heat exchange tubes (3) adopt extended surface tubes. The scheme of the utility model can effectively lower the height of the boiler body, reduce the investment cost of a boiler, is convenient to maintain, can control the air temperature and the air pressure of steam-water pipelines and waste air and effectively improves the running efficiency of the boiler; and meanwhile, the boiler with the technical scheme has favorable heat exchange effect with coincided outlet and inlet temperature control and design, smaller steam header fluctuation and convenient system control.
Description
Technical field
The utility model relates to cement kiln pure low-temperature cogeneration system, and more particularly, the utility model is to belong to a kind of heat exchange tube of cement kiln waste heat power generation kiln hood boiler evaporator arrangement.
Background technology
Cement industry is that major power consumer also is the energy waste rich and influential family, and country continued macro adjustments and controls in nearly 2 years, the problem of having saved energy and reduce the cost and must finish into cement industry, and the cement kiln pure low-temperature cogeneration technology can solve energy-saving and cost-reducing problem well.In cement kiln pure low-temperature cogeneration technology field, the design of waste heat boiler is a very crucial link, it not only is related to the organic efficiency of whole cement kiln waste-heat power generation system to the cement producing line waste heat, and is related to the operation that can afterheat generating system steady in a long-term.Cogeneration kiln hood boiler mainly is made up of economizer, evaporimeter, superheater.Economizer is the outlet waste gas residual heat heating boiler feedwater that utilizes by evaporimeter, and the feedwater after the heating enters evaporimeter by drum, produces saturated vapor, and saturated vapor heats once more by superheater, produces the acting of superheated steam admission turbine.The kiln hood boiler evaporator also is a kind of dividing wall type heat-exchange apparatus, tube fluid is a steam water interface, the pipe outer wall is a cement kiln waste gas, and the density contrast by utilizing water in the downcomer and the steam water interface in the tedge is set up working medium and circulated as motive force.At present, in the cement kiln pure low-temperature cogeneration system, what the kiln hood boiler adopted substantially all is vertical boiler at home, the boiler of this structure, and its evaporimeter heat exchanger tube angle of inclination is bigger, and mainly have following drawback: 1, boiler height is bigger, is not easy to maintenance; 2, do not consider the temperature field of boiler internal, reduced boiler evaporator outlet waste gas heat content, make the economizer heat quantity not sufficient, cause the economizer exit water temperature low, after boiler feedwater enters drum the water level inside fluctuation bigger, be not easy to control; 3, the evaporator water rate of circulating flow is big, has reduced the life-span of heat transfer efficiency and evaporimeter, and it is lower to go out the EGT of evaporimeter, is convenient to the control of system to EGT.Therefore, effectively control the angle of inclination of boiler evaporator heat exchanger tube, reduce the height of boiler body, reduce the cost that boiler drops into, be convenient to patrol and examine personnel's maintenance, the control of control steam-water pipeline and waste gas wind-warm syndrome and blast, the operational efficiency that improves boiler just becomes a technical problem of being badly in need of solution.
The utility model content
Technical problem to be solved in the utility model is: the arrangement that a kind of cogeneration kiln hood boiler evaporator heat exchanger tube is provided, by determining the angle of inclination of waste heat boiler evaporimeter heat exchanger tube, guaranteeing under the evaporimeter loop condition, thereby rationally control the economizer exit temperature, stablize steam water-level, reduce the input of boiler cost, can reduce boiler height simultaneously.
The utility model is a kind of arrangement of cogeneration kiln hood boiler evaporator heat exchanger tube, comprise: evaporimeter, the heat exchanger tube of evaporimeter (evaporimeter is made up of heat exchanger tube), described heat exchanger tube is set to become with horizontal plane the structure of angle, two of heat exchanger tube links to each other with header, and the above heat exchanger tube of twice forms parallel upwards structure arranged.
Described heat exchanger tube and horizontal plane angle angle are especially between 0 ° to 10 °.
Described heat exchanger tube and horizontal plane angle angle are especially between 2 ° to 6 °.
The optimum value of described heat exchanger tube and horizontal plane angle angle is set to 3 °.
The end that described per pass heat exchanger tube is set to extend to the boiler body left side is higher than an end that extends to the boiler body right side.
MEDIA FLOW in the described heat exchanger tube is to for flowing to boiler body left side one end from boiler body right side one end.
Described heat exchanger tube all adopts extended surface tube.
Adopt the arrangement of the evaporimeter heat exchanger tube of technical solutions of the utility model, can control the angle of inclination of boiler evaporator heat exchanger tube effectively, can effectively reduce the height of boiler body, reduce the cost that boiler drops into, be convenient to patrol and examine personnel's maintenance, can control steam-water pipeline and waste gas wind-warm syndrome and blast, effectively improve the operational efficiency of boiler; Simultaneously, adopt technical solutions of the utility model boiler good effect of heat exchange, control of waste gas gateway temperature and design coincide, and the drum fluctuation is less, are convenient to system's control.
Description of drawings
Below expressed content of each width of cloth accompanying drawing in the specification of the present utility model and the mark among the figure are briefly explained:
Fig. 1 is the structure cross-sectional schematic of the arrangement of a kind of heat exchange tube of cement kiln waste heat power generation kiln hood boiler evaporator of the utility model;
Fig. 2 is a local structure for amplifying cross-sectional schematic of the present utility model;
Be labeled as among the figure: 1, boiler body; 2, evaporimeter; 3, heat exchanger tube; 4, boiler body left side; 5, boiler body left side; 6, superheater; 7, economizer; 8, header.
The specific embodiment
Contrast accompanying drawing below, by description, the effect of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are described in further detail embodiment:
Described heat exchanger tube 3 and horizontal plane angle angle are especially between 0 ° to 10 °.
Described heat exchanger tube 3 and horizontal plane angle angle are especially between 2 ° to 6 °.
Described heat exchanger tube 3 is set to 3 ° with the optimum value of horizontal plane angle angle.
The end that described per pass heat exchanger tube 3 is set to extend to boiler body left side 4 is higher than an end that extends to boiler body right side 5.
MEDIA FLOW in the described heat exchanger tube 3 is to for flowing to boiler body left side 4 one ends from boiler body right side 5 one ends.
Described heat exchanger tube 3 all adopts extended surface tube.
The kiln hood boiler
EvaporimeterIt also is a kind of dividing wall type heat-exchange apparatus, heat exchanger tube 3 inner fluids are steam water interfaces, heat exchanger tube 3 outer walls are cement kiln waste gas, density contrast by utilizing water in the downcomer and the steam water interface in the tedge is as motive force, setting up working medium circulates, by along the pipe in MEDIA FLOW to direction, be inclined upwardly 3 °, can guarantee the motive force of Natural Circulation, can the input cost of boiler will be controlled effectively again, the exchange heat of assurance system effectively improves the operational efficiency of boiler in reasonable range.
Kiln hood boiler structure pattern of the present utility model is adopted as vertical Natural Circulation drum boiler, and heating surface heat exchanger tube 3 all adopts extended surface tube, has effectively increased heat exchange area.Boiler sets gradually superheater, evaporimeter and economizer from top to bottom, is reverse-flow layout.
Superheater and economizer all are arranged horizontally, the difference in height of 4 outlet header on the left of the inlet header of evaporimeter by boiler body right side 5 and the boiler body, guarantee its along MEDIA FLOW to being inclined upwardly 3 °.Such design can guarantee the motive force of Natural Circulation, can will effectively control the input cost of boiler again, and the exchange heat that guarantees system effectively improves the operational efficiency of boiler in reasonable range.
The outlet header in the inlet header on boiler body right side 5 and boiler body left side 4 all is connected to drum with the boiler pipe arrangement, reach the purpose of boiler Natural Circulation, evaporimeter heat exchanger tube 3 is staggered, effectively change the flow direction of waste gas, increase waste gas in the time that boiler internal stops, increased the heat exchange efficiency of boiler.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the concrete realization of the utility model is not subjected to the restriction of above-mentioned concrete mode; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or without change design of the present utility model and technical scheme directly applied to other occasions, all fall in the protection domain of the present utility model.
Claims (7)
1, a kind of arrangement of cogeneration kiln hood boiler evaporator heat exchanger tube, comprise: evaporimeter (2), the heat exchanger tube of evaporimeter (3), it is characterized in that: described heat exchanger tube (3) is set to become with horizontal plane the structure of angle, the same header in two (8) of heat exchanger tube (3) links to each other, and the above heat exchanger tube (3) of twice forms parallel upwards structure arranged.
2, the arrangement of cogeneration kiln hood boiler evaporator heat exchanger tube according to claim 1 is characterized in that: described heat exchanger tube (3) and horizontal plane angle angle are especially between 0 ° to 10 °.
3, according to the arrangement of claim 1,2 described cogeneration kiln hood boiler evaporator heat exchanger tubes, it is characterized in that: described heat exchanger tube (3) and horizontal plane angle angle are especially between 2 ° to 6 °.
4, the arrangement of cogeneration kiln hood boiler evaporator heat exchanger tube according to claim 3 is characterized in that: described heat exchanger tube (3) is set to 3 ° with the optimum value of horizontal plane angle angle.
5, the arrangement of cogeneration kiln hood boiler evaporator heat exchanger tube according to claim 1 is characterized in that: the end that described per pass heat exchanger tube (3) is set to extend to boiler body left side (4) is higher than an end that extends to boiler body right side (5).
6, the arrangement of cogeneration kiln hood boiler evaporator heat exchanger tube according to claim 1 is characterized in that: the MEDIA FLOW in the described heat exchanger tube (3) is to for (5) one ends flow to boiler body left side (4) one ends from the boiler body right side.
7, the arrangement of cogeneration kiln hood boiler evaporator heat exchanger tube according to claim 1, it is characterized in that: described heat exchanger tube (3) all adopts extended surface tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200393123U CN201310872Y (en) | 2008-09-02 | 2008-09-02 | Arrangement structure of waste heat power generation kiln hood evaporator heat exchange tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200393123U CN201310872Y (en) | 2008-09-02 | 2008-09-02 | Arrangement structure of waste heat power generation kiln hood evaporator heat exchange tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310872Y true CN201310872Y (en) | 2009-09-16 |
Family
ID=41108124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200393123U Expired - Lifetime CN201310872Y (en) | 2008-09-02 | 2008-09-02 | Arrangement structure of waste heat power generation kiln hood evaporator heat exchange tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310872Y (en) |
-
2008
- 2008-09-02 CN CNU2008200393123U patent/CN201310872Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Bright Thermal Equipment Co., Ltd. Assignor: Anhui Conch Kawasaki Engineering Co., Ltd. Contract record no.: 2010340000090 Denomination of utility model: Arrangement structure for heat exchange tube of cement kiln waste heat power generation kiln hood boiler evaporator Granted publication date: 20090916 License type: Exclusive License Record date: 20100603 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090916 |
|
| CX01 | Expiry of patent term |