CN207815377U - A kind of two-part steam type airheater - Google Patents
A kind of two-part steam type airheater Download PDFInfo
- Publication number
- CN207815377U CN207815377U CN201721906048.4U CN201721906048U CN207815377U CN 207815377 U CN207815377 U CN 207815377U CN 201721906048 U CN201721906048 U CN 201721906048U CN 207815377 U CN207815377 U CN 207815377U
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- China
- Prior art keywords
- steam
- high pressure
- low pressure
- preheater
- water piping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model is related to a kind of two-part steam type airheater, including babinet, low pressure stage, high pressure section, flash tank, into vapour and drain water piping and into steam control valve, drain valve；Low pressure stage and high pressure section are arranged in the babinet；The low pressure stage is low pressure heat-exchanging tube bundle, and the high pressure section is restrained for high pressure heat exchange, leads to low-pressure steam and high steam in tube bank respectively；It is external that the flash tank is arranged in preheater sheet, is connected with preheater by high pressure draining pipeline, flash-off steam pipeline；The steam inlet pipe road is connected with preheater into vapour header respectively；The drain water piping is connected with low pressure and high pressure heat exchange tube bank outlet respectively；Described is arranged in into steam control valve on extraction line, hydrophobic to be separately mounted on drain water piping.
Description
Technical field
The utility model patent is related to burning city domestic garbage field, and the steam of specially waste incinerator burning is empty
Air preheater.
Background technology
During incineration treatment of garbage, in order to make waste of low heating value preferably burn, ensure to enter waste incineration burner hearth
Burning air be maintained at stable temperature, burning air need to could enter incinerator after steam type airheater heats.
The steam type airheater of major part garbage burning factory is that two-part preheater, i.e. First air is used to pass through first at present
The low pressure stage for crossing steam turbine steam extraction is heated to about 140 DEG C, and then the high pressure section Jing Guo drum steam extraction is heated to 220 DEG C, steam heating
The hydrophobic drain water piping that passes through generated afterwards finally respectively enters oxygen-eliminating device.
The shortcomings that above-mentioned pre-heating system, is：1. since drum pressure, temperature are higher, if high pressure section it is hydrophobic directly into
Entering oxygen-eliminating device, to cause entry into oxygen-eliminating device internal pressure temperature higher, destroys oxygen-eliminating device thermal balance, oxygen-eliminating device itself is caused to boil；
2. the steam extraction amount of above system high-quality steam is larger, loss of steam and water also increases, and causes a large amount of high-quality loss of energy, simultaneously
Heat recovery rate is very low.
Invention content
The utility model patent proposes a kind of economic, stable two-part steam air pre-heating system, that is, uses hydrophobic
Recovery system by high temperature and pressure it is hydrophobic by flash tank flash carry out decrease temperature and pressure processing, generation it is hydrophobic enter oxygen-eliminating device, and
Flash-off steam is then recycled to preheater low pressure stage, and which system reduces the drain temperatures and pressure that enter oxygen-eliminating device, avoid and remove
Oxygen device itself boiling problem, while hydrophobic heat has been recycled, reduce steam turbine steam extraction and drum steam extraction amount, improves the warp of system
Ji property.
In order to achieve the above object, the utility model patent provides the following technical solutions：
A kind of two-part steam type airheater, including babinet, low pressure stage, high pressure section, flash tank, into vapour and drain water piping
And into steam control valve, drain valve；Low pressure stage and high pressure section are arranged in the babinet；The low pressure stage is low pressure heat exchanger tube
Beam, the high pressure section are restrained for high pressure heat exchange, lead to low-pressure steam and high steam in tube bank respectively；The flash tank arrangement
It is external in preheater sheet, it is connected with preheater by high pressure draining pipeline, flash-off steam pipeline；The steam inlet pipe road respectively with
Preheater is connected into vapour header；The drain water piping is connected with low pressure and high pressure heat exchange tube bank outlet respectively；It is described into vapour
Regulating valve is arranged on extraction line, and drain valve is separately mounted on drain water piping.
Further, before and after the preheater babinet on be provided with air inlet and air outlet；When preheater works, rubbish is come from
The combustion air in hole enters steam type airheater by wind turbine, passes through low-pressure steam heat exchanging segment successively, high steam exchanges heat
Two sections of heating of Duan Jinhang.
Further, above-mentioned high pressure section steam comes from drum saturated vapor, and steam becomes after high pressure section and air heat-exchange
It is hydrophobic at high pressure saturation, then enter flash tank flash distillation by high pressure draining pipeline, the flash-off steam of generation and steam turbine steam extraction are mixed
It further exchanges heat into low pressure heat exchanging segment after conjunction, the hydrophobic of generation also enters oxygen-eliminating device.
The utility model is reasonable for structure, reliable for operation, economical, makes full use of flash-off steam, steam turbine steam extraction and boiler drum
As heat source heat stepwise burning air used, steam utilization is high, is a kind of efficient air heating apparatus for steam extraction.
Description of the drawings
Fig. 1 is the utility model patent structure schematic diagram；
Fig. 2 is the utility model patent system schematic；
In figure, 1- babinets, 2- low pressure stages heat exchanger tube, 3- low pressure stages are into vapour header, 4- high pressure sections heat-exchanging tube bundle, 5- high pressure sections
Into vapour header, 6- high pressure drainings pipeline, 7- low pressure drain water piping, 8- flash-off steams pipeline, 9- steam turbines extraction line, 10- drums
Extraction line, 11- flash tanks, 12- flash tanks drain water piping, 13- are into steam control valve, 14- drain valves.
Specific implementation mode
A kind of steam type airheater described in the utility model patent is made in conjunction with attached drawing 1, attached drawing 2 and representative instance in face
Further instruction.
Shown in Figure 1, a kind of steam type airheater described in the utility model patent is two-part pre-heating system,
Specifically include babinet, low pressure stage, high pressure section, flash tank and into vapour and drain water piping.Referring to Fig. 2, low pressure heat-exchanging tube bundle 2, high pressure
Section heat-exchanging tube bundle 4 is arranged in box house, and it is external that flash tank 11 is arranged in preheater sheet.Saturated vapor from drum enters pipe
By being connect into vapour header 5 with high pressure heat exchange tube bank 4 behind road 10, drum steam extraction generates saturated water after fully exchanging heat with air, satisfies
Flash tank 11 is entered by high pressure draining pipeline 6 with water, high pressure draining cool down further after the processing of temperature drop pressure in flash tank 11
Become flash-off steam and hydrophobic, it is hydrophobic to enter oxygen-eliminating device, and flash-off steam then passes through flash-off steam pipeline 8 and enters low pressure steam turbine and takes out
In steam pipe road 9；After steam extraction from steam turbine is mixed with flash-off steam, by entering low pressure heat-exchanging tube bundle into vapour header 3, with air
What is generated after heat exchange is hydrophobic then into oxygen-eliminating device；In preheater operational process can by adjust the aperture into steam control valve 13 come
Steam turbine steam extraction and drum extraction flow size are adjusted, and then adjusts air preheater outlet air temperature；It can using drain valve 14
It prevents in preheater in steam flow ipe.
Claims (2)
1. a kind of two-part steam type airheater, which is characterized in that including babinet, low pressure stage, high pressure section, flash tank, into vapour
And drain water piping and into steam control valve, drain valve；Low pressure stage and high pressure section are arranged in the babinet；The low pressure stage is
Low pressure heat-exchanging tube bundle, the high pressure section are restrained for high pressure heat exchange, lead to low-pressure steam and high steam in tube bank respectively；Described
It is external that flash tank is arranged in preheater sheet, is connected with preheater by high pressure draining pipeline, flash-off steam pipeline；It is described into vapour
Pipeline is connected with preheater into vapour header respectively；The drain water piping is connected with low pressure and high pressure heat exchange tube bank outlet respectively；
Described is arranged in into steam control valve on extraction line, and drain valve is separately mounted on drain water piping.
2. a kind of two-part steam type airheater according to claim 1, which is characterized in that before and after preheater babinet
On be provided with air inlet and air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721906048.4U CN207815377U (en) | 2017-12-30 | 2017-12-30 | A kind of two-part steam type airheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721906048.4U CN207815377U (en) | 2017-12-30 | 2017-12-30 | A kind of two-part steam type airheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207815377U true CN207815377U (en) | 2018-09-04 |
Family
ID=63328574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721906048.4U Active CN207815377U (en) | 2017-12-30 | 2017-12-30 | A kind of two-part steam type airheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207815377U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990348A (en) * | 2017-12-30 | 2018-05-04 | 上海康恒环境股份有限公司 | A kind of two-part steam type airheater |
-
2017
- 2017-12-30 CN CN201721906048.4U patent/CN207815377U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990348A (en) * | 2017-12-30 | 2018-05-04 | 上海康恒环境股份有限公司 | A kind of two-part steam type airheater |
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