CN207849329U - A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization - Google Patents
A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization Download PDFInfo
- Publication number
- CN207849329U CN207849329U CN201820200825.1U CN201820200825U CN207849329U CN 207849329 U CN207849329 U CN 207849329U CN 201820200825 U CN201820200825 U CN 201820200825U CN 207849329 U CN207849329 U CN 207849329U
- Authority
- CN
- China
- Prior art keywords
- channel
- waste heat
- heat boiler
- boiler
- denitration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Chimneys And Flues (AREA)
Abstract
The utility model discloses a kind of binary channels waste heat boilers preventing SCR denitration ammonium salt crystallization, including boiler steel structure, boiler inlet channel, denitration exit passageway, boiler export channel, exhanst gas outlet, waste heat boiler high temperature section, waste heat boiler denitration section and two sets of waste heat boiler low-temperature zones, the denitration exit passageway includes channel A, channel B, the first stop valve being arranged on the A of channel and the second stop valve being arranged on the B of channel；The boiler export channel includes channel C, channel D, the third stop valve being arranged in channel C and the 4th stop valve being arranged on the D of channel；Two sets of waste heat boiler low-temperature zones are arranged correspondingly between the outlet and the import of channel C of the channel A and between the outlet and the import of channel D of the channel B.The binary channels waste heat boiler of the utility model can effectively avoid because ammonium salt crystallization causes waste heat boiler efficiency to decline and stop, it can be ensured that device long-term operation.
Description
Technical field
The utility model is related to a kind of binary channels waste heat boilers preventing SCR denitration ammonium salt crystallization.
Background technology
In general, the waste heat boiler of oil refining, chemical metallurgy device is responsible for the waste heat recovery of device, self-produced steam, water supply
The multinomial effects such as preheating, device vapour and power output.Currently, due to the needs of environmental requirement, waste heat boiler is often fitted in SCR
Warm denitration function, the principle of SCR denitration are to restore the NOx in flue gas with ammonia to achieve the purpose that denitration.Consider anyization
Learning reaction can not possibly convert completely, therefore using inevitably there are ammonia in the flue gas after Benitration reactor when SCR denitration
Gas remains, and is commonly called as the escaping of ammonia.The escaping of ammonia be facts have proved in 3ppm or more, the ammonia of escape inevitably with the SO3 in flue gas
Generate ammonium sulfate or hydrogen sulfate ammonia with water, be commonly called as the crystallization of sulphur ammonia, the sulphur ammonia crystalline melt point of generation is relatively low, often with the catalysis in flue gas
Agent and particulate matter, which combine to be attached on boiler heating surface, causes flue gas to block, and to influence boiler efficiency, can seriously influence boiler
Safe operation causes to be forced blowing out or destructive consequence.
Utility model content
The purpose of the utility model is to overcome the defect of the prior art, a kind of SCR denitration ammonium salt crystallization that prevents is provided
Binary channels waste heat boiler, with light-weight, reasonable for structure, heat-transfer effect is good, modularized design, binary channels design and installation
Convenient advantage, on the basis of being removed to flue gas waste heat recovery and to nitrogen oxides in effluent realize avoid ammonium salt crystallization to
Ensure waste heat boiler long-term operation.
Realizing the technical solution of above-mentioned target is：A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization, packet
Include boiler steel structure, boiler inlet channel, denitration exit passageway, boiler export channel, exhanst gas outlet, waste heat boiler high temperature section,
Waste heat boiler denitration section and two sets of waste heat boiler low-temperature zones, wherein：
The boiler steel structure includes steelframe and the platform staircase that is arranged on the steelframe, the boiler inlet channel,
Denitration exit passageway and boiler export channel are separately fixed on the steelframe；
The denitration exit passageway includes channel A, channel B, the first stop valve being arranged on the A of channel and is arranged in channel
The outlet end of the second stop valve on B, the boiler inlet channel is connected to the channel A and channel B respectively；
The boiler export channel includes channel C, channel D, the third stop valve being arranged in channel C and is arranged in channel
The 4th stop valve on D, the channel C and channel D are connected to the exhanst gas outlet respectively；
The channel A and channel C are oppositely arranged, and the channel B and channel D are oppositely arranged；
The waste heat boiler high temperature section includes water conservation section, high temperature superheater, low temperature superheater and high-temperature evaporator；
The waste heat boiler denitration section includes dilution wind preheater, spray ammonia module and Benitration reactor；
The water conservation section, high temperature superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module and
Benitration reactor is successively set on along the flow direction of flue gas in the boiler inlet channel；
Two sets of waste heat boiler low-temperature zones be arranged correspondingly the outlet of the channel A and the import of channel C it
Between and the outlet and the import of channel D of the channel B between；
It often covers in the waste heat boiler low-temperature zone and is respectively arranged with flue gas waste heat recovery equipment；
It is provided with ash cleaner for exhaust-heating boiler in the waste heat boiler low-temperature zone.
A kind of above-mentioned binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization, wherein the flue gas waste heat recovery
Equipment includes cryogenic vaporizer, high-temperature economizer and the low-level (stack-gas) economizer set gradually along the flow direction of flue gas.
Above-mentioned a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization, wherein the water conservation section, height
Warm superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module, Benitration reactor, cryogenic vaporizer, height
Modular structure is respectively adopted in warm economizer and low-level (stack-gas) economizer.
A kind of above-mentioned binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization, wherein the waste heat boiler low temperature
Duan Caiyong external thermal insulation hot-wall structures.
A kind of above-mentioned binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization, wherein the waste heat boiler deashing
Device includes the water flushing device of the shock wave soot blower and excision soot blower of online soot blowing, and the shock wave soot blower is arranged described
On the external thermal insulation hot wall of waste heat boiler low-temperature zone.
Above-mentioned a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization, wherein the Benitration reactor is adopted
With single-layer or multi-layer Benitration reactor, the multilayer Benitration reactor is set gradually along the flow direction of flue gas.
The binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization of the utility model, with light-weight, structure
Rationally, the advantage that heat-transfer effect is good, modularized design, binary channels design and installation are convenient, to flue gas waste heat recovery and to cigarette
It is realized on the basis of removal of nitrogen oxide in gas and avoids ammonium salt crystallization to ensure waste heat boiler long-term operation, can effectively avoid
Because ammonium salt crystallization causes waste heat boiler efficiency to decline and stop.
Description of the drawings
Fig. 1 is the structural schematic diagram of the binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization of the utility model；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the process flow chart of the binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization of the utility model.
Specific implementation mode
In order to make those skilled in the art be better understood when the technical solution of the utility model, with reference to attached
Its specific implementation mode is described in detail in figure：
It please refers to Fig.1, Fig. 2 and Fig. 3, the most preferred embodiment of the utility model, a kind of SCR denitration ammonium salt crystallization that prevents
Binary channels waste heat boiler, including boiler steel structure, boiler inlet channel 10, denitration exit passageway, boiler export channel, flue gas go out
Mouth 50, waste heat boiler high temperature section, waste heat boiler denitration section and two sets of waste heat boiler low-temperature zones.
Boiler steel structure includes steelframe 71 and platform staircase 72.Boiler inlet channel 10, denitration exit passageway and boiler go out
Mouth channel is separately fixed on steelframe 71.
Denitration exit passageway includes channel A 31, channel B 33, the first stop valve 32 being arranged on channel A 31 and sets
The second stop valve 34 on channel B 33 is set, the outlet end in boiler inlet channel 10 connects with channel A 31 and channel B 33 respectively
It is logical.
Boiler export channel includes channel C 51, channel D 53, the third stop valve 52 being arranged in channel C 51 and sets
The 4th stop valve 54 on channel D 53 is set, channel C 51 and channel D 53 are connected to exhanst gas outlet 50 respectively.Channel A 31
It is oppositely arranged with channel C 51, channel B 33 and channel D 53 are oppositely arranged；
Waste heat boiler high temperature section includes water conservation section 11, high temperature superheater 12, low temperature superheater 13 and high-temperature evaporator 14；
Waste heat boiler denitration section includes dilution wind preheater 21, spray ammonia module 22 and Benitration reactor 23；Water conservation section 11, hyperthermia and superheating
Device 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia module 22 and Benitration reactor 23 are along flue gas
Flow direction be successively set in boiler inlet channel 10.
Two sets of waste heat boiler low-temperature zones are arranged correspondingly between the outlet of channel A 31 and the import of channel C 51
And between the outlet and the import of channel D 53 of channel B 33；It often covers in waste heat boiler low-temperature zone and is respectively arranged with fume afterheat
Reclaimer, flue gas waste heat recovery equipment can be identical, can also arrange difference；In the present embodiment, flue gas waste heat recovery equipment
Include cryogenic vaporizer 41, high-temperature economizer 42 and the low-level (stack-gas) economizer 43 set gradually along the flow direction of flue gas.
It is provided with ash cleaner for exhaust-heating boiler in waste heat boiler low-temperature zone.Waste heat boiler low-temperature zone uses external thermal insulation hot wall knot
Structure is conducive to that effective soot blowing facility is arranged, to control ammonium salt crystallization.Ash cleaner for exhaust-heating boiler includes swashing for online soot blowing
The external thermal insulation in waste heat boiler low-temperature zone is arranged in the water flushing device 62 of wave soot blower 61 and excision soot blower, shock wave soot blower 61
On hot wall.
Water conservation section 11, high temperature superheater 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia
Modular structure is respectively adopted in module 22, Benitration reactor 23, cryogenic vaporizer 41, high-temperature economizer 42 and low-level (stack-gas) economizer 43.
Water conservation section 11, high temperature superheater 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia module 22,
Benitration reactor 23, cryogenic vaporizer 41, high-temperature economizer 42 and low-level (stack-gas) economizer 43 constitute each heating surface of waste heat boiler.I.e.
Each heating surface of waste heat boiler is designed as modular structure, has and is replaced using maintenance.
Benitration reactor 23 use single-layer or multi-layer Benitration reactor, multilayer Benitration reactor along the flow direction of flue gas according to
Secondary setting.
Again referring to Fig. 3, flue gas enters from the input end in boiler inlet channel 10, pass through water conservation section 11, high temperature successively
At superheater 12, low temperature superheater 13, high-temperature evaporator 14, dilution wind preheater 21, spray ammonia module 22 and Benitration reactor 23
Then reason enters waste heat boiler low-temperature zone by channel A and/or channel B respectively and carries out flue gas waste heat recovery, last flue gas is from logical
Road C and/or channel D enters exhanst gas outlet 50, can lead on the channel A, channel B, channel C, channel D before and after waste heat boiler low-temperature zone
It crosses corresponding stop valve effectively to cut off, the pipe-line system of two sets of waste heat boiler low-temperature zones also can effectively be cut off and two sets of waste heat boilers
Low-temperature zone is spare each other.
In conclusion the binary channels waste heat boiler of the utility model can prevent the binary channels waste heat of SCR denitration ammonium salt crystallization
Boiler, with light-weight, reasonable for structure, heat-transfer effect is good, modularized design, binary channels design and installation are easily excellent
Point can effectively avoid because ammonium salt crystallization causes waste heat boiler efficiency to decline and stop, it can be ensured that device long-term operation.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate that this practicality is new
Type, and be not used as the restriction to the utility model, as long as in the spirit of the utility model, to the above
Variation, the modification of embodiment will all be fallen in the Claims scope of the utility model.
Claims (6)
1. a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization, which is characterized in that including boiler steel structure, pot
Stove intake channel, denitration exit passageway, boiler export channel, exhanst gas outlet, waste heat boiler high temperature section, waste heat boiler denitration section and
Two sets of waste heat boiler low-temperature zones, wherein：
The boiler steel structure includes steelframe and the platform staircase that is arranged on the steelframe, the boiler inlet channel, denitration
Exit passageway and boiler export channel are separately fixed on the steelframe；
The denitration exit passageway includes channel A, channel B, the first stop valve being arranged on the A of channel and is arranged on the B of channel
The second stop valve, the outlet end in the boiler inlet channel is connected to the channel A and channel B respectively；
The boiler export channel includes channel C, channel D, the third stop valve being arranged in channel C and is arranged on the D of channel
The 4th stop valve, the channel C and channel D are connected to the exhanst gas outlet respectively；
The channel A and channel C are oppositely arranged, and the channel B and channel D are oppositely arranged；
The waste heat boiler high temperature section includes water conservation section, high temperature superheater, low temperature superheater and high-temperature evaporator；
The waste heat boiler denitration section includes dilution wind preheater, spray ammonia module and Benitration reactor；
The water conservation section, high temperature superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module and denitration
Reactor is successively set on along the flow direction of flue gas in the boiler inlet channel；
Two sets of waste heat boiler low-temperature zones be arranged correspondingly between the outlet and the import of channel C of the channel A with
And between the outlet and the import of channel D of the channel B；
It often covers in the waste heat boiler low-temperature zone and is respectively arranged with flue gas waste heat recovery equipment；
It is provided with ash cleaner for exhaust-heating boiler in the waste heat boiler low-temperature zone.
2. a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization according to claim 1, feature exist
In, the flue gas waste heat recovery equipment include the cryogenic vaporizer set gradually along the flow direction of flue gas, high-temperature economizer and
Low-level (stack-gas) economizer.
3. a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization according to claim 2, feature exist
In the water conservation section, high temperature superheater, low temperature superheater, high-temperature evaporator, dilution wind preheater, spray ammonia module, denitration are anti-
Answer device, cryogenic vaporizer, high-temperature economizer and low-level (stack-gas) economizer that modular structure is respectively adopted.
4. a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization according to claim 1, feature exist
In the waste heat boiler low-temperature zone uses external thermal insulation hot-wall structure.
5. a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization according to claim 4, feature exist
In the ash cleaner for exhaust-heating boiler includes the water flushing device of the shock wave soot blower and excision soot blower of online soot blowing, described
Shock wave soot blower is arranged on the external thermal insulation hot wall of the waste heat boiler low-temperature zone.
6. a kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization according to claim 1, feature exist
In the Benitration reactor uses single-layer or multi-layer Benitration reactor, and the multilayer Benitration reactor is along the flow direction of flue gas
It sets gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820200825.1U CN207849329U (en) | 2018-02-06 | 2018-02-06 | A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820200825.1U CN207849329U (en) | 2018-02-06 | 2018-02-06 | A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207849329U true CN207849329U (en) | 2018-09-11 |
Family
ID=63411234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820200825.1U Active CN207849329U (en) | 2018-02-06 | 2018-02-06 | A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207849329U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087851A (en) * | 2018-02-06 | 2018-05-29 | 上海宁松热能环境工程有限公司 | A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization |
-
2018
- 2018-02-06 CN CN201820200825.1U patent/CN207849329U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087851A (en) * | 2018-02-06 | 2018-05-29 | 上海宁松热能环境工程有限公司 | A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104180378B (en) | Method for online elimination of ammonium bisulfate clogging of air pre-heaters of coal-fired boiler of thermal power plant | |
| WO2018171098A1 (en) | High-temperature and high-pressure denitration waste heat boiler mated with catalytic cracking unit | |
| CN110180386B (en) | Flue gas spiral diffusion denitration device and denitration method | |
| CN101898086A (en) | Power-generation and denitrification integrated device by residual heat of glass furnace and method thereof | |
| CN201697137U (en) | Waste incineration flue gas waste heat recovery device | |
| CN111238039B (en) | Device for preventing boiler low-temperature corrosion by heat conduction oil heat storage and working method | |
| CN109966915A (en) | A kind of gasification of biomass coupling coal-burning boiler full load SCR denitration system and process | |
| CN206771420U (en) | A kind of block-resistant type air preheater step-by-step arrangement system | |
| CN106621809A (en) | Regeneration tower waste heat recovering system and method of activated coke dry method desulfurizer | |
| CN207849329U (en) | A kind of binary channels waste heat boiler preventing SCR denitration ammonium salt crystallization | |
| CN204830000U (en) | System for use spiral finned heat exchanger to promote air preheater safety | |
| CN207237700U (en) | Flue-gas denitration process system | |
| CN210568552U (en) | Boiler energy-saving and flue gas whitening system | |
| CN110145754A (en) | It can prevent the boiler flue gas treatment system and method for back-end surfaces low-temperature corrosion | |
| CN209917631U (en) | Full-load SCR denitration system of biomass gasification coupling coal-fired boiler | |
| CN108087851A (en) | A kind of binary channels waste heat boiler for preventing SCR denitration ammonium salt crystallization | |
| CN112097287B (en) | Boiler energy-saving and flue gas whitening system, process and application | |
| CN212430928U (en) | Device for relieving blockage of rotary air preheater by preheating heat storage element through hot air | |
| CN210153844U (en) | Boiler flue gas treatment system capable of preventing low-temperature corrosion of tail heating surface | |
| CN210107340U (en) | Anticorrosive type exhaust-heat boiler system | |
| CN113154365A (en) | Supercritical CO2Experimental system for coal-fired boiler ultralow emission research | |
| CN207805390U (en) | A kind of station boiler denitrating system | |
| CN206787322U (en) | A kind of charcoal element technique calcined coke flue gas energy-conserving and environment-protective comprehensive treatment device | |
| CN206803210U (en) | A kind of system of the anti-low temperature condensation of tubular air preheater and stifled ash | |
| CN205192265U (en) | Power generation system is jointly retrieved to glass melting furnace flue gas and annealing kiln waste gas waste heat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jinhui town Fengxian District Shanghai city 201403 North Village four group B -28 Co-patentee after: Zhejiang ningsong thermal boiler equipment Co., Ltd Patentee after: Shanghai Ningsong Heat Energy Environment Engineering Co., Ltd. Address before: Jinhui town Fengxian District Shanghai city 201403 North Village four group B -28 Co-patentee before: Zhejiang better thermal energy boiler equipment Co., Ltd. Patentee before: Shanghai Ningsong Heat Energy Environment Engineering Co., Ltd. |