CN207095378U - The antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion - Google Patents
The antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion Download PDFInfo
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- CN207095378U CN207095378U CN201721091133.XU CN201721091133U CN207095378U CN 207095378 U CN207095378 U CN 207095378U CN 201721091133 U CN201721091133 U CN 201721091133U CN 207095378 U CN207095378 U CN 207095378U
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- flue gas
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Abstract
The utility model is a kind of antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion, it is characterised in that：The low-temperature flue gas heat-exchange system includes flush box, flushing water pump group, pressurized water pump group, plastic steel heat exchanger, metallic recuperator；The flush box difference Joining Technology water water inlet pipe, flushing water pump group, flushing water enter flush box from the process water water inlet pipe；The plastic steel heat exchanger connects the flushing water pump group, pressurized water pump group, metallic recuperator respectively, need to heat water and access the plastic steel heat exchanger by the pressurized water pump group, the metallic recuperator exports heated water.The utility model can effectively improve low-temperature flue gas heat-exchange system anti-low-temperature corrosion and antiwear ability, so as to improve system utilization rate, reduce unit net coal consumption rate, moreover it is possible to improve efficiency of dust collection, reduce the capacity of air-introduced machine, reduce desulphurization system water consume.
Description
Technical field
A kind of heat-exchange system is the utility model is related to, a kind of antiwear low-temperature flue gas of anti-low-temperature corrosion is particularly disclosed and changes
Hot systems, applied to environmental protection and energy saving field.
Background technology
Recent years, country increasingly paid attention to energy-saving, and this is also the most important thing of each high-power station.Station boiler
Flue gas loss is a most important heat loss, typically about 5%~12% in boiler operatiopn, account for boiler heat loss 60%~
70%.And thering is considerable power plant the higher phenomenon of exhaust gas temperature to be present in running, the overgauge between design load is more than
+ 10 DEG C, some reaches more than+20 DEG C.It can be said that exhaust gas temperature is higher and has the problem of cause a large amount of heat loss universal
Property.In order to reduce heat loss due to exhaust gas, power plant's whole efficiency is further improved, realizes good energy-saving benefit and environmental benefit, cigarette
Gas UTILIZATION OF VESIDUAL HEAT IN is increasingly paid attention at home, mainly has following several utilize form at present：
1st, fume afterheat heat-setting water or heat medium water are utilized.It is to low that smoke heat exchanging system is used after boiler air preheater
The comprehensive utilization of temperature-heat-source, by comprehensively utilizing flue gas heat, flue gas waste heat recovery is improved as much as possible, improves value,
So as to effectively reduce unit net coal consumption rate, reach the purpose effectively economized on coal.
2nd, flue-gas temperature after heating chimney.Domestic Coal,steam plant with FGD largely uses lime stone-gypsum wet
Sulfur removal technology, and most of power plant all eliminates GGH, and the neat stress temperature after desulfurization is reduced to 50 DEG C or so, directly passes through
Chimney is discharged into air, and gypsum rain is often produced around chimney, and gypsum rain causes many harmful effects to power plant neighboring area,
In order to improve chimney breast flue-gas temperature, many power plant add MGGH systems.
External low-temperature flue gas heat exchanger technology is more already applied.China carries out later, from 09 year till now, low
The renovation technique of warm flue gas heat-exchange unit comparative maturity.Low-temperature corrosion and abrasion are always maximum during fume afterheat utilizes ask
Topic, many equipment just occur, because of seepy question caused by tube wear and corrosion, to have a strong impact on the operation of power plant after putting into operation.It is low
Warm flue gas heat-exchange unit is designed corrosion, wear and dust stratification problem to be considered.At present, the main material of low-temperature flue gas heat exchanger is
Metal, plastic steel and fluoroplastics etc..The ND steel that China develops, acid corrosion-resistant excellent effect, have one compared with other corrosion-resisting steels
Determine advantage, but decay resistance is relatively still limited, easily blocks up grey fouling, and equipment life is short.
The content of the invention
The purpose of this utility model is solve the defects of prior art, there is provided a kind of antiwear low temperature of anti-low-temperature corrosion
Smoke heat exchanging system, it is possible to increase low-temperature flue gas heat-exchange system anti-low-temperature corrosion and antiwear ability, be so as to effectively improve
System utilization rate, reduces unit net coal consumption rate, reaches the purpose effectively economized on coal, and improves efficiency of dust collection, reduces the capacity of air-introduced machine, drop
Low desulphurization system water consume.
What the utility model was realized in：A kind of antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion, its feature
It is：The low-temperature flue gas heat-exchange system includes flush box, flushing water pump group, pressurized water pump group, plastic steel heat exchanger, metal
Heat exchanger；The flush box difference Joining Technology water water inlet pipe, flushing water pump group, flushing water enter from the process water water inlet pipe
Enter flush box；The plastic steel heat exchanger connects the flushing water pump group, pressurized water pump group, metallic recuperator respectively, need to add
Hot water accesses the plastic steel heat exchanger by the pressurized water pump group, and the metallic recuperator exports heated water.
The flushing water pump group includes two flush water pumps in parallel.The pressurized water pump group includes two superchargings in parallel
Water pump.Soot blower is provided with the metallic recuperator, boiler sootblowing steam and compressed air are respectively connected at the top of the soot blower.
The plastic steel heat exchanger uses water backwashing manner deashing, to prevent the blocking of equipment and ensure changing for equipment
Thermal effect, flush box and the flushing water pump group provide rinse water for the plastic steel heat exchanger.The metallic recuperator
It is made of ND steel, the metallic recuperator uses the soot blower deashing, to prevent the blocking of equipment and ensure equipment
Heat transfer effect.The pressurized water pump group is used to overcome SR.
The beneficial effects of the utility model are：The utility model can effectively improve low-temperature flue gas heat-exchange system anti-low-temperature corrosion
With antiwear ability, so as to improve system utilization rate, ensure the safe and effective operation of power plant.The utility model can reduce machine
Group net coal consumption rate, reaches the purpose effectively economized on coal, but also can improve efficiency of dust collection, reduces the capacity of air-introduced machine, reduces de-
Sulphur system water consume.The utility model effectively combines metal material and plastic steel, and low-temperature zone is made of plastic Steel material
Flue gas heat-exchange unit, high temperature section uses flue gas heat-exchange unit made of metal material, can so improve the anti-low-temperature corrosion of system
With anti-wear ability, while also there is good adaptability to underrun.Plastic steel heat exchanger of the present utility model uses water
Backwashing manner deashing, to prevent the blocking of equipment and ensure the heat transfer effect of equipment, flush box and flushing water pump group are
Plastic steel heat exchanger provides rinse water.Metallic recuperator of the present utility model uses soot blower deashing, to prevent equipment
Block and ensure the heat transfer effect of equipment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, flush box；2nd, flush water pump；3rd, plastic steel heat exchanger；4th, metallic recuperator；5th, pressurized water
Pump；6th, soot blower.
Embodiment
With reference to the accompanying drawings 1, a kind of antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion of the utility model, including flushing water
Case 1, flushing water pump group, pressurized water pump group, plastic steel heat exchanger 3, metallic recuperator 4；The flush box 1 distinguishes Joining Technology
Water water inlet pipe, flushing water pump group, flushing water enter flush box 1 from the process water water inlet pipe；The plastic steel heat exchanger 3 divides
The flushing water pump group, pressurized water pump group, metallic recuperator 4 are not connected, need to heat water and institute is accessed by the pressurized water pump group
Plastic steel heat exchanger 3 is stated, the metallic recuperator 4 exports heated water.
The flushing water pump group includes two flush water pumps 2 in parallel.The pressurized water pump group includes two increasings in parallel
Water pump 5.Soot blower 6 is provided with the metallic recuperator 4, the top of soot blower 6 is respectively connected to boiler sootblowing steam and compression is empty
Gas.
The plastic steel heat exchanger 3 uses water backwashing manner deashing, to prevent the blocking of equipment and ensure equipment
Heat transfer effect, the flush box 1 and flushing water pump group provide rinse water for the plastic steel heat exchanger 3.The metal changes
Hot device 4 is made of ND steel, and the metallic recuperator 4 uses the deashing of soot blower 6, to prevent the blocking of equipment and guarantor
Demonstrate,prove the heat transfer effect of equipment.The pressurized water pump group is used to overcome SR.
The utility model is using fume afterheat heating water, and flue gas flow direction is with current direction on the contrary, high-temperature flue gas is introduced into metal
Heat exchanger 4 enters back into plastic steel heat exchanger 3.The utility model is provided with using metal made of ND Steel materials in gas approach section
Heat exchanger 4, it is provided with exhanst gas outlet section using plastic steel heat exchanger 3 made of plastic Steel material, the flue gas of gas approach section
Flue-gas temperature is reduced to 105 °C after the heat exchange of metallic recuperator 4, then passes through plastic steel heat exchanger by temperature at 135 °C or so
Flue-gas temperature is dropped to 90 °C from 105 °C after 3 heat exchange；Need heating water from user is moulded by the pressurized water pump group access package
In steel heat exchanger 3, by the way that water temperature is raised into 70 °C from 55 °C after plastic steel heat exchanger 3 and flue gas heat exchange, subsequently into the gold
Belong to heat exchanger 4, by the way that water temperature is raised into 100 °C from 70 °C after the metallic recuperator 4 and flue gas heat exchange, then export heated
Water is to user.
The utility model can effectively improve low-temperature flue gas heat-exchange system anti-low-temperature corrosion and antiwear ability, so as to improve
System utilization rate, ensure the safe and effective operation of power plant.The utility model can reduce unit net coal consumption rate, reach and effectively economize on coal
Purpose, but also efficiency of dust collection can be improved, reduce the capacity of air-introduced machine, reduce desulphurization system water consume.The utility model handle
Metal material and plastic steel effectively combine, and low-temperature zone uses flue gas heat-exchange unit made of plastic Steel material, and high temperature section uses
Flue gas heat-exchange unit made of metal material, the anti-low-temperature corrosion of system and anti-wear ability can be so improved, while to low negative
Lotus operation also has good adaptability.Plastic steel heat exchanger 3 of the present utility model uses water backwashing manner deashing, to prevent from setting
Standby blocks and ensures the heat transfer effect of equipment, and flush box 1 and flushing water pump group are that plastic steel heat exchanger 3 provides flushing use
Water.Metallic recuperator 4 of the present utility model uses the deashing of soot blower 6, to prevent the blocking of equipment and ensure changing for equipment
Thermal effect.
Claims (4)
- A kind of 1. antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion, it is characterised in that：The low-temperature flue gas heat-exchange system Including flush box, flushing water pump group, pressurized water pump group, plastic steel heat exchanger, metallic recuperator；The flush box connects respectively Process water water inlet pipe, flushing water pump group are connect, flushing water enters flush box from the process water water inlet pipe；The plastic steel heat exchange Device connects the flushing water pump group, pressurized water pump group, metallic recuperator respectively, need to heat water and be accessed by the pressurized water pump group The plastic steel heat exchanger, the metallic recuperator export heated water.
- 2. the antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion according to claim 1, it is characterised in that：It is described Flushing water pump group includes two flush water pumps in parallel.
- 3. the antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion according to claim 1, it is characterised in that：It is described Pressurized water pump group includes two booster water pumps in parallel.
- 4. the antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion according to claim 1, it is characterised in that：It is described Soot blower is provided with metallic recuperator, boiler sootblowing steam and compressed air are respectively connected at the top of the soot blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091133.XU CN207095378U (en) | 2017-08-29 | 2017-08-29 | The antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091133.XU CN207095378U (en) | 2017-08-29 | 2017-08-29 | The antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207095378U true CN207095378U (en) | 2018-03-13 |
Family
ID=61540167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091133.XU Expired - Fee Related CN207095378U (en) | 2017-08-29 | 2017-08-29 | The antiwear low-temperature flue gas heat-exchange system of anti-low-temperature corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207095378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019210499A1 (en) * | 2018-05-04 | 2019-11-07 | 江苏申江环境科技有限公司 | Device for cleaning fouling in desulfurization entrance |
-
2017
- 2017-08-29 CN CN201721091133.XU patent/CN207095378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019210499A1 (en) * | 2018-05-04 | 2019-11-07 | 江苏申江环境科技有限公司 | Device for cleaning fouling in desulfurization entrance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180313 |