CN209271194U - A kind of regenerator shutdown anti-corrosion system - Google Patents
A kind of regenerator shutdown anti-corrosion system Download PDFInfo
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- CN209271194U CN209271194U CN201821986676.2U CN201821986676U CN209271194U CN 209271194 U CN209271194 U CN 209271194U CN 201821986676 U CN201821986676 U CN 201821986676U CN 209271194 U CN209271194 U CN 209271194U
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- 238000005260 corrosion Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000005204 segregation Methods 0.000 claims abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 52
- 239000007789 gas Substances 0.000 claims description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 31
- 229910052799 carbon Inorganic materials 0.000 description 31
- 239000003546 flue gas Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001868 water Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000005815 base catalysis Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical compound O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to a kind of regenerators to shut down anti-corrosion system, be divided into charge section, bringing-up section, segregation section, cooling section and unloading part from top to bottom inside regenerator；It heats pars infrasegmentalis and is equipped with hot-wind inlet, top is equipped with hot-blast outlet, the first thermometer is equipped at hot-wind inlet, segregation section side is equipped with parsing gas vent, second temperature meter is equipped with inside segregation section, parsing gas vent is connect by parsing gas pipeline with resource utilization device, the first shut-off valve and the second shut-off valve are successively arranged along gas flow direction on the parsing gas pipeline, parsing gas pipeline is connected with compressed air pipe between the first shut-off valve and the second shut-off valve, third shut-off valve is equipped between compressed air pipe and parsing gas pipeline, gas pipeline position between the second shut-off valve and resource utilization device is parsed to connect by outer discharge pipe with chimney, outer discharge pipe is equipped with the 4th shut-off valve, the utility model can be realized after a shutdown, regenerator internal residual is parsed into gas clean-up, prevent regenerator from corroding.
Description
Technical field
The utility model relates to a kind of regenerators to shut down anti-corrosion system, and in particular to one kind is absorption with carbon base catalyst
Regenerator and a kind of shutdown operation method in the boiler smoke combined desulfurization and denitration device of agent and catalyst, belong to environment
Field of engineering technology.
Background technique
Charcoal base catalysis method flue gas desulfurization and denitrification technical principle are as follows: flue gas under the absorption and catalytic action of carbon base catalyst,
SO in flue gas2And O2And H20, which reacts, generates H2SO4, H2SO4It is adsorbed in carbon base catalyst micropore；Charcoal base is utilized simultaneously
The catalytic performance of catalyst, NOx and dilution ammonia occur catalytic reduction reaction and generate N in flue gas2, the desulfurization for realizing flue gas is de-
Nitre, the carbon base catalyst after adsoption catalysis reaction recycle after being regenerated.Dilution ammonia is injected in desulfuring and denitrifying apparatus, is used
It is N by the NOx conversion in flue gas in the denitration reaction for realizing gas cleaning process2。
Regenerative process is heated, following chemical reaction occurs for the ADSORPTION STATE sulfuric acid for being adsorbed on carbon base catalyst micropore:
H2SO4 H2O → SO3+2H2O
SO3+1/2C → SO2+1/2CO2
Chemically equation can be seen that in parsing gas containing SO2, a small amount of SO3 and water, and condense shape under cryogenic
At diluted acid, and regenerator is steel component, is easily corroded.Carbon base catalyst (or activated coke, active carbon) gas cleaning skill
In art, regenerator is main device, and structure is larger, belongs to permanent component, and corrosion phenomenon such as occurs, especially generation inner tube
The workload of the corrosion of journey, reparation is very big.
When regenerator runs well, parsing gas is in 400 DEG C or more of hot environment, much higher than the moisture condensation of parsing gas
Temperature.After shutdown, temperature is stepped down to room temperature in regenerator, if there is remaining parsing gas, will form the corrosion of acid dew again
Raw tower member.
The country with carbon base catalyst (or activated coke, active carbon) be adsorbent, catalyst flue gas desulfurization and denitrification application in,
Repeatedly occurs the case where main member pipe corrosion of regenerator operation carbon base catalyst tube side.Using heating regeneration technology
Regenerator, the factor in addition to considering structure, parameter etc. also need to select reasonably to shut down operation program, guarantee after a shutdown
The not remaining parsing gas of low temperature environment, prevent corrosion regenerator.
Utility model content
In order to solve the problems in the existing technology, provide one kind may be implemented in stopping process and stops the utility model
After machine, regenerator internal residual is parsed into gas clean-up, effectively prevent regenerator corrosion of component.
In order to achieve the above object, the utility model proposes technical solution are as follows: a kind of regenerator shuts down anti-corrosion system,
Charge section, bringing-up section, segregation section, cooling section and unloading part are divided into inside the regenerator from top to bottom；The bringing-up section
Inside is equipped with heating tube, and the heating tube upper and lower ends are connected to charge section and segregation section respectively, and cooling tube is equipped in cooling section,
Cooling tube upper and lower ends are connected to segregation section and unloading part respectively；The heating pars infrasegmentalis is equipped with hot-wind inlet, and top is equipped with heat
Wind exports, and the first thermometer is equipped at hot-wind inlet, and the segregation section side is equipped with parsing gas vent, is equipped with inside segregation section
Second temperature meter.
Be further designed to above-mentioned technical proposal: the hot-blast outlet is connect with hot air circulation blower air inlet, heat
Wind circulating fan gas outlet is connect with heater air inlet, and heater air outlet is connect with hot-wind inlet.
The parsing gas vent is connect by parsing gas pipeline with resource utilization device, on the parsing gas pipeline
The first shut-off valve and the second shut-off valve are successively arranged along gas flow direction.
The parsing gas pipeline is connected with compressed air pipe between the first shut-off valve and the second shut-off valve, and compression is empty
Third shut-off valve is equipped between feed channel and parsing gas pipeline.
Parsing gas pipeline position between the second shut-off valve and resource utilization device passes through outer discharge pipe and chimney
Connection, the outer discharge pipe are equipped with the 4th shut-off valve.
The cooling pars infrasegmentalis is equipped with cold air inlet, and top is exported equipped with cold wind, and cooling blower is equipped at cold air inlet.
It is equipped with partition along horizontal cross-section in the middle part of the charge section, the partition is equipped with blanking port.
The charge section two sides are symmetrically arranged with the first nitrogen inlet, and first nitrogen inlet is located at below partition, and first
The 5th shut-off valve is equipped at nitrogen inlet.
The unloading part two sides are symmetrically arranged with the second nitrogen inlet, are equipped with the 6th shut-off valve at the second nitrogen inlet.
Above-mentioned regenerator shuts down the shutdown operation method of anti-corrosion system, includes the following steps:
Step 1: closing heater, no longer offer heat source heats carbon base catalyst, and hot air circulation blower operates normally,
The conveying of carbon base catalyst operates normally in regenerator；
Step 2: when the detection temperature of the first thermometer is lower than 350 DEG C, and the second temperature meter detection of regenerator segregation section
When temperature is lower than 150 DEG C, hot air circulation blower is closed, is stopped to regenerator air blast；
Step 3: closing the 6th shut-off valve, stop injecting nitrogen to regenerator cooling section；
Step 4: closing the 5th shut-off valve, stop injecting nitrogen to regenerator bringing-up section；
Step 5: stopping the operation of resource utilization device；
Step 6: opening the 4th shut-off valve on outer discharge pipe, the first shut-off valve on parsing gas pipeline, isolation are closed
Regenerator and external connection；
Step 7: the second shut-off valve is closed, isolation resource utilization device and external connection；
Step 8: opening third shut-off valve, injecting compressed air purges pipeline inside, by remaining parsing gas
It is discharged from chimney.
Step 9: stopping the transport of carbon base catalyst.
The invention has the benefit that
The utility model be prevent regenerator after stopping process or shutdown, prevent regenerator from corroding, after shutdown according to
It is secondary first to stop heater, no longer carbon base catalyst is heated, weakens the generation of parsing gas until stopping.Hot air circulation during this
Blower runs well, and gradually uniformly cooling regenerator, thermal stress bring carbon base catalyst caused by reduction inhomogeneous cooling is even are broken
Damage, until dropping to 150 DEG C or less.The nitrogen of a heating section and a cooling section continues to inject, and carbon base catalyst is made to be in anaerobic shape always
State, and the parsing gas gradually reduced is delivered to resource utilization unit.After satisfying the requirements, stop hot air circulation blower, so
The shut-off valve on parsing gas pipeline is successively closed or opened afterwards, and introduces compressed air and is purged, and eliminates remaining parsing
Gas prevents regenerator from corroding.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
In attached drawing, 1- hot air circulation blower；The first thermometer of 2-；3- heater；The 4th shut-off valve of 4-；5- first is turned off
Valve；The second shut-off valve of 6-；7- third shut-off valve；8- cooling blower；The 5th shut-off valve of 9-；10- tube side；11- regenerator；12-
Two thermometers；13- shell side；The 6th shut-off valve of 14-, the first nitrogen inlet of 15-, the second nitrogen inlet of 16-, 17- hot-wind inlet,
18- hot-blast outlet, 19- cold air inlet, the outlet of 20- cold wind, 21- charge section, 22- bringing-up section, 23- segregation section, 24- cooling section,
25- unloading part, 26- parse gas vent.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of regenerator of the present embodiment shuts down anti-corrosion system, successively divide from top to bottom inside regenerator
For charge section 21, bringing-up section 22, segregation section 23, cooling section 24 and unloading part 25；Heating tube, heating tube are equipped with inside bringing-up section 22
Upper and lower ends are connected to charge section 21 and segregation section 23 respectively, and cooling tube, cooling tube upper and lower ends difference are equipped in cooling section 24
It is connected to segregation section 23 and unloading part 25；22 lower part of bringing-up section is equipped with hot-wind inlet 17, and top is equipped with hot-blast outlet 18, and hot wind enters
The first thermometer 2 is equipped at mouthfuls 17,23 side of segregation section is equipped with parsing gas vent 26, sets that there are four second inside segregation section 23
Thermometer 12, hot-blast outlet 18 are connect with 1 air inlet of hot air circulation blower, 1 gas outlet of hot air circulation blower and 3 air inlet of heater
Mouth connection, 3 gas outlet of heater are connect with hot-wind inlet 17, and hot wind is in hot air circulation blower 1, heater 3,17 and of hot-wind inlet
Circulation is formed between hot-blast outlet 18, and the hot wind of outflow bringing-up section 22 is recycled, is saved energy consumption.
It parses gas vent 26 in the present embodiment to connect by parsing gas pipeline with resource utilization device, utilization of resources dress
It sets connection to recycle the SO2 and SO3 etc. that parse in gas, production sulfuric acid, sulphur etc. have the product of higher utility value, realize
Resource utilization in flue gas after pollutant removing.
The first shut-off valve 5 and the second shut-off valve 6 are successively arranged along gas flow direction on parsing gas pipeline.Parse gas
Pipeline is connected with compressed air pipe, compressed air pipe and parsing gas pipeline between the first shut-off valve and the second shut-off valve
Between be equipped with third shut-off valve 7.It parses gas pipeline position between the second shut-off valve 7 and resource utilization device and passes through outer comb
Road is connect with chimney, and outer discharge pipe is equipped with the 4th shut-off valve 4.
24 lower part of cooling section is equipped with cold air inlet 19 in the present embodiment, and top is equipped with cold wind outlet 20, at cold air inlet 19
Equipped with cooling blower 8.
When regenerator is run, carbon base catalyst enters regenerator from charge section 21, is equipped in the middle part of charge section along horizontal cross-section
Partition, partition are equipped with blanking port, enter charge section bottom through blanking port 20, carbon base catalyst can be made even into bringing-up section
22, it will not be accumulated in 22 inlet of bringing-up section, facilitate being evenly heated for carbon base catalyst, carbon base catalyst enters heating tube 22
And walk tube side 10(heating tube) in heating, the shell side 13 of the heated pipe of the hot wind that hot-wind inlet 17 is passed through, and to the charcoal for walking tube side
Base catalyst is heated, and is then flowed out through hot-blast outlet 18, and hot wind is not contacted with carbon base catalyst in heating process, reduces charcoal
Pollution, corrosion of base catalyst etc.；Segregation section 23 is fallen into after carbon base catalyst heating and parses the gases such as SO2, enters back into cooling
The tube side (cooling tube) of section 24 is cooling, and the cold wind that cold air inlet 19 is passed through enters the shell side 13 of cooling section, to carbon base catalyst into
Row cooling, after from 20 discharge of cold wind outlet, enter unloading part 25 after carbon base catalyst is cooling.
It is symmetrically arranged with the first nitrogen inlet 15 in 21 two sides of charge section in the present embodiment, the first nitrogen inlet 15 is located at partition
Lower section is equipped with the 5th shut-off valve 9 at the first nitrogen inlet.25 two sides of unloading part are symmetrically arranged with the second nitrogen inlet 16, the second nitrogen
The 6th shut-off valve 14 is equipped at gas entrance 16.
The nitrogen that the first, second nitrogen inlet is passed through when regenerator is run can be used as delivery gas and carbon base catalyst enters
Tube side (heating tube and cooling tube) guarantees that carbon base catalyst is in positive pressure oxygen-free environment, and the solution that will be parsed in heating process
Gassing body is transported to resource utilization device.The nitrogen being passed through may further be used to maintain necessary positive pressure in reactor, prevent all
Air caused by factor enters regenerator, guarantees that carbon base catalyst is in oxygen-free environment.
To prevent parsing residual gas from corroding regenerator when the regenerator of the present embodiment, grasped using the shutdown of following steps
Make:
Step 1: closing heater 3, no longer offer heat source heats carbon base catalyst, and hot air circulation blower 1 is normally transported
It goes, the conveying of carbon base catalyst operates normally in regenerator；
Step 2: when the detection temperature of the first thermometer 2 is lower than 350 DEG C, and the second temperature meter of regenerator segregation section 23
When 12 detection temperature are lower than 150 DEG C, hot air circulation blower 1 is closed, is stopped to regenerator air blast；
Step 3: closing the 6th shut-off valve 14, stop injecting nitrogen to regenerator cooling section 24；
Step 4: closing the 5th shut-off valve 9, stop injecting nitrogen to regenerator bringing-up section 22；
Step 5: stopping the operation of resource utilization device；
Step 6: opening the 4th shut-off valve 4 on outer discharge pipe, the first shut-off valve 5 on parsing gas pipeline is closed, every
Exhausted regenerator and external connection；
Step 7: the second shut-off valve 6 is closed, isolation resource utilization device and external connection；
Step 8: opening third shut-off valve 7, pipeline inside is blown by compressed air pipe injecting compressed air
It sweeps, remaining parsing gas is discharged from chimney.
Step 9: stopping the transport of carbon base catalyst.
The parsing gas of the regenerator discharge of the present embodiment is not provided with blower, will parse gas using the pressure of nitrogen and convey
To resource utilization unit, simplifies system, investment reduction and reduce maintenance cost.Regenerator is in positive pressure environment, is compared to
Subnormal ambient is easier to realize the oxygen-free environment still adhered in regenerator, air can be prevented from carbon base catalyst feed inlet and discharge
Mouthful enter regenerator, can further prevent outside air from entering from because of gap caused by the factors such as manufacturing quality and construction quality
Regenerator.
The utility model can have various suitable changes and variation, within the spirit and principle of the utility model institute
Any modification, equivalent substitution, improvement and etc. of work, should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of regenerator shuts down anti-corrosion system, it is characterised in that: be divided into charging inside the regenerator from top to bottom
Section, bringing-up section, segregation section, cooling section and unloading part；Heating tube, the heating tube upper and lower ends point are equipped with inside the bringing-up section
Be not connected to charge section and segregation section, be equipped with cooling tube in cooling section, cooling tube upper and lower ends respectively with segregation section and unloading part
Connection；The heating pars infrasegmentalis is equipped with hot-wind inlet, and top is equipped with hot-blast outlet, is equipped with the first thermometer, institute at hot-wind inlet
It states segregation section side and is equipped with parsing gas vent, be equipped with second temperature meter inside segregation section.
2. regenerator shuts down anti-corrosion system according to claim 1, it is characterised in that: the hot-blast outlet and hot air circulation
Fan air inlet connection, hot air circulation blower gas outlet are connect with heater air inlet, and heater air outlet and hot-wind inlet connect
It connects.
3. regenerator shuts down anti-corrosion system according to claim 2, it is characterised in that: the parsing gas vent passes through solution
Analysis gas pipeline is connect with resource utilization device, is successively arranged the first shutdown along gas flow direction on the parsing gas pipeline
Valve and the second shut-off valve.
4. regenerator shuts down anti-corrosion system according to claim 3, it is characterised in that: the parsing gas pipeline is first
It is connected with compressed air pipe between shut-off valve and the second shut-off valve, the is equipped between compressed air pipe and parsing gas pipeline
Three shut-off valves.
5. regenerator shuts down anti-corrosion system according to claim 4, it is characterised in that: the parsing gas pipeline is second
Position is connect by outer discharge pipe with chimney between shut-off valve and resource utilization device, and the outer discharge pipe is equipped with the 4th shutdown
Valve.
6. regenerator shuts down anti-corrosion system according to claim 1, it is characterised in that: the cooling pars infrasegmentalis is equipped with cold wind
Entrance, top are exported equipped with cold wind, and cooling blower is equipped at cold air inlet.
7. regenerator shuts down anti-corrosion system according to claim 1, it is characterised in that: cut in the middle part of the charge section along level
Face is equipped with partition, and the partition is equipped with blanking port.
8. regenerator shuts down anti-corrosion system according to claim 7, it is characterised in that: the charge section two sides are symmetrically arranged with
First nitrogen inlet, first nitrogen inlet are located at below partition, and the 5th shut-off valve is equipped at the first nitrogen inlet.
9. regenerator shuts down anti-corrosion system according to claim 8, it is characterised in that: the unloading part two sides are symmetrically arranged with
Second nitrogen inlet is equipped with the 6th shut-off valve at the second nitrogen inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821986676.2U CN209271194U (en) | 2018-11-29 | 2018-11-29 | A kind of regenerator shutdown anti-corrosion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821986676.2U CN209271194U (en) | 2018-11-29 | 2018-11-29 | A kind of regenerator shutdown anti-corrosion system |
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| Publication Number | Publication Date |
|---|---|
| CN209271194U true CN209271194U (en) | 2019-08-20 |
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ID=67608774
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821986676.2U Active CN209271194U (en) | 2018-11-29 | 2018-11-29 | A kind of regenerator shutdown anti-corrosion system |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289515A (en) * | 2018-11-29 | 2019-02-01 | 国电环境保护研究院有限公司 | A kind of regenerator shuts down anti-corrosion system and shutdown operation method |
| CN112957806A (en) * | 2021-02-09 | 2021-06-15 | 深圳中广核工程设计有限公司 | Bottom cleaning system and bottom cleaning method for inward-in and outward-out drum-shaped filter screen |
-
2018
- 2018-11-29 CN CN201821986676.2U patent/CN209271194U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289515A (en) * | 2018-11-29 | 2019-02-01 | 国电环境保护研究院有限公司 | A kind of regenerator shuts down anti-corrosion system and shutdown operation method |
| CN109289515B (en) * | 2018-11-29 | 2024-01-19 | 国电环境保护研究院有限公司 | Shutdown anti-corrosion system and shutdown operation method for regeneration tower |
| CN112957806A (en) * | 2021-02-09 | 2021-06-15 | 深圳中广核工程设计有限公司 | Bottom cleaning system and bottom cleaning method for inward-in and outward-out drum-shaped filter screen |
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