CN103638991A - Composite apparatus for generating SCR denitrification catalyst and testing activity of catalyst before and after regeneration - Google Patents
Composite apparatus for generating SCR denitrification catalyst and testing activity of catalyst before and after regeneration Download PDFInfo
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Abstract
A composite apparatus for generating an SCR (selective catalytic reduction) denitrification catalyst and testing the activity of the catalyst before and after the regeneration comprises an activity testing system and a regenerating system, the activity testing system and the regenerating system share a vertical reaction furnace 1, and the inlet/outlet of the vertical reaction furnace 1 is provided with a gas analyzer; and compressed air of a compressed air storage tank 12 of the regenerating system and a regenerating liquid pumped out of a circulating pool 14 by a circulating pump 13 are respectively conveyed to cleaning nozzles 17 over the inner cavity of the reaction furnace of the activity testing system, an ash separator plate 19 is arranged below the inner cavity of the reaction furnace, an ash collecting tank 20 is arranged at two sides of the ash separator plate, and the outlet of the ash collecting tank 20 is open to the circulating pool 14. The apparatus effectively simplifies the regeneration process of the catalyst, and is convenient to verify and evaluate the practical regeneration effect.
Description
Technical field
The present invention relates to a kind of set composite for active testing before and after the regeneration of SCR denitrating catalyst and regeneration.
Background technology
In order to tackle increasingly serious environment situation, country strengthened the control dynamics of Liao Dui coal-burning power plant Air Pollutant Emission in recent years, and denitrating flue gas becomes another emission control emphasis after dedusting, desulfurization.According to the requirement of up-to-date standard GB/T 13223-2011 < < fossil-fuel power plant atmospheric pollutant emission standard > >, from 1 day July in 2014, the discharged nitrous oxides concentration of most of existing thermal power generation boiler will be carried out 100mg/Nm
3limit value.In order to meet discharged nitrous oxides requirement under the new situation, a large amount of coal-fired units had started the transformation of Flue Gas Denitrification Engineering over the past two years, what wherein great majority were selected is the SCR that denitration efficiency is high, technique is more ripe (Selective Catalytic Reduction, SCR) gas denitrifying technology.
The core of SCR denitration technology is SCR denitrating catalyst, and in SCR denitrating system actual moving process, the activity of catalyst can decline, and along with the activity decline of catalyst, the performance of whole denitrating system also declines gradually.When catalyst activity reduction arrives certain threshold value, must change processing.For the catalyst of inactivation, best processing mode is the processing of regenerating, and the activity of regeneration rear catalyst can be recovered to a certain extent, thereby has realized the recycling of decaying catalyst, and the secondary pollution of having avoided catalyst to bring, there is good economic benefit and environmental benefit.
The general process of catalyst regeneration is: first, and the activity of sampling and testing catalyst, and determine the main cause of catalysqt deactivation and the feasibility of regeneration by chemical analysis characterization method; Secondly, according to catalysqt deactivation reason, select renovation process and prepare catalyst regeneration liquid it is carried out to actual reproduction; Finally, regeneration rear catalyst is carried out to active testing, whether checking regeneration produces a desired effect.At present, the renovation process of SCR catalyst mainly contains: washing regeneration, pickling regeneration, thermal process regeneration etc.Different according to the deactivation cause of catalyst, selected renovation process is also different.Generally, because the deactivation cause of catalyst is comparatively complicated, often need that multiple renovation process is compound to be selected, so that realize the at utmost recovery of catalyst activity.
Publication number is that the patent of invention of CN102114422A has proposed device and the technique that a kind of SCR catalyst can be realized denitration reaction and regeneration, this invention, by a SCR catalyst regeneration reaction unit and SCR catalyst denitration reaction device reaction unit that permeates, has realized the denitration simultaneously of SCR catalyst and regeneration.Regenerative process comprises that air purge, pickling the step such as supplement except alkali, drying and roasting, host, and regeneration rear catalyst can continue on for denitration reaction, but this patent of invention does not relate to the active testing of regeneration rear catalyst.
Publication number is that the patent of invention of CN102103047A has proposed a kind of method and apparatus detecting for fume denitration catalyst activity, the Main Components of the accurate control simulation flue gas of the method, simulated flue gas completes denitration reaction process after entering the reactor that catalyst to be measured is housed, by flue gas NO change in concentration situation before and after flue gas analyzer detection reaction device, thereby obtain the activity of catalyst.This apparatus system is simple, and parameter is controlled accurately, but this scheme institute detecting catalyst module requires to be less than 500cm
3, be difficult to meet the testing requirement to SCR catalyst monomer module.
In prior art, not yet find that there is the set composite that can simultaneously carry out the regeneration of SCR denitrating catalyst and regeneration front and back active testing.
Summary of the invention
Technical problem to be solved by this invention, is just to provide a kind of set composite for active testing before and after the regeneration of SCR denitrating catalyst and regeneration, and this device has been simplified the regenerative process of catalyst effectively, is convenient to the checking of actual reproduction effect and evaluation.
Solve the problems of the technologies described above, the present invention adopts following technical scheme:
Before and after the regeneration of SCR denitrating catalyst and regeneration, a set composite for active testing, comprises active testing system and regenerative system, it is characterized in that: described active testing system and regenerative system share a vertical response stove 1;
Described active testing system comprises vertical response stove 1, and the import/export of vertical response stove 1 is respectively provided with a set of gas analyzer;
Described regenerative system comprises compressed air reservoir 12, circulatory pool 14, circulating pump 13, threeway changeover valve 11, washer jet 17, every hawk 19, ash collection slot 20, the compressed air of described compressed air reservoir 12 and being delivered to respectively after threeway changeover valve 11 by the regenerated liquid that circulating pump 13 pumps circulatory pool 14, then in the 17 pairs of reacting furnaces of washer jet of top of reacting furnace 1 inner chamber through being arranged in active testing system, decaying catalyst purges and sprays cleaning; Every hawk 19, be arranged in the below of reacting furnace inner chamber, the partition for purge to bottom pipeline, prevents and treats pipeline blockage, and ash collection slot 20 is arranged in the both sides every hawk, the dust stratification producing for collecting purge, and circulatory pool 14 is led in the outlet of ash collection slot 20.
Described active testing system comprises NH
3, N
2, O
2, SO
2, NO gas cylinder group 3, water evaporation device 9, mix preheating furnace 8, reacting furnace 1 and condensation absorption plant 18; Described NH
3gas cylinder is connected directly to reacting furnace entrance by pipeline, described N
2, O
2, SO
2, NO gas cylinder with mix preheating furnace 8 and pass through pipeline connection, each gas passes to mix in preheating furnace and mixes and preheat, described water evaporation device 9 is connected to and is mixed preheating furnace entrance by pipeline, the steam producing passes into and mixes in preheating furnace, described mixing preheating furnace 8, reacting furnace 1 and condensation absorption plant 18 use pipelines are connected successively, each gas, after mixing, preheating, reaction, is discharged through the post processing of condensation absorption plant;
On the basis of the above, the present invention can also have following various improvement:
1, in described reacting furnace stove, be provided with heater 6 and temperature controller 7, according to different step, regulate temperature in corresponding stove;
2, described active testing system to reacting furnace, regenerative system is provided with switch valve to the connecting line of reacting furnace, for the mutual isolation of regenerative system and active testing system;
3, described mixing preheating furnace is also provided with heater and temperature controller, and the temperature of mixing preheating furnace while controlling active testing is 300 ℃;
4, described NH
3, N
2, O
2, SO
2, NO gas cylinder connecting line on be provided with pressure-reducing valve 4 and mass flowmenter 5, described water evaporation device and mix on the connecting line of preheating furnace and be also provided with mass flowmenter, for the accurate control to each composition flow rate;
5, on the pipeline that described compressed air reservoir is connected with threeway changeover valve, be also provided with pressure-reducing valve and mass flowmenter, for controlling the purging pressure of purge;
6, in described circulatory pool, can add deionized water or regenerated liquid, circulating-pump outlet is also provided with mass flowmenter, for controlling to adjust the cleaning flow of cleaning process;
7, the outer wall of described reacting furnace is also coated with one deck insulating 21;
8, described circulatory pool is also provided with dosing mouth 15 and floss hole 16, for interpolation and the replacing of solution in pond.
The course of work of the present invention:
(1) active testing before regeneration: the SCR catalyst of inactivation is packed in reacting furnace, decaying catalyst is carried out to active testing, active testing process adopts gas cylinder group to simulate actual flue gas condition, by mixing after preheating, each component gas enters and in reacting furnace, completes denitration reaction, by the nitrous oxides concentration of gas analyzer test reaction stove entrance and exit, and then calculate the activity constant K value before decaying catalyst regeneration;
The activity constant K of SCR catalyst
1value is calculated according to following formula:
K(α)=-AVln(1-η)；
In formula, the activity constant value that K is catalyst, m/h; AV is air velocity, m
3/ H
stp, wet/ m
2; η is transformation efficiency of the oxides of nitrogen, %, η=(C
0-C
1)/C
0, C
0, C
1be respectively nitrogen oxide entrance and exit concentration, mg/Nm
3;
(2) actual reproduction of catalyst: regenerative process mainly comprises the steps:
1. purge deashing: adopt oil-free compressed air to carry out purge to decaying catalyst, remove the dust stratification on catalyst duct and surface;
2. solution cleans: catalyst regeneration liquid is packed in circulatory pool, by circulating pump, regenerated liquid is inputted in reacting furnace, decaying catalyst is sprayed to cleaning;
3. rinsing recovers: deionized water is packed in circulatory pool, by circulating pump, deionized water is inputted in reacting furnace, decaying catalyst is carried out to rinsing Recovery processing;
4. drying and roasting: adopt oil-free compressed air, under certain temperature conditions, the decaying catalyst in reacting furnace is carried out to drying and roasting processing;
Above-mentioned steps also can be carried out repetition or increase according to the actual inactivation situation of catalyst;
(3) active testing after regeneration: the catalyst after regeneration is processed carries out active testing, and the same step of process (1), calculates the catalyst activity constant K after regeneration
2value, (being to introduce first this concept for the first time) introduces the regeneration recovery coefficient K of catalyst again
h, for the regeneration effect to catalyst, evaluate regeneration recovery coefficient K
hcomputing formula is as follows:
K
h=K
2/K
1；
In the present invention, the gas cylinder group of described step (1) includes N
2, O
2, NO, NH
3, SO
2be used for simulating actual flue gas condition, also include water evaporation device, be used for passing into steam in reacting furnace, described mixing preheating furnace and reacting furnace all dispose heater and temperature controller, for accurately controlling the temperature of mixing preheating furnace and reacting furnace, mix preheat temperature and are set as 300 ℃, the Temperature Setting of reaction system is 350～420 ℃, specifically according to the optimum activity Temperature Setting of catalyst; The purging deashing process of described step (2), purges pressure and can be set as 0.4～0.6MPa, and the regenerated liquid pH value control range that described solution cleaning process adds is 4～6, and scavenging period is 2～3h; Described rinsing recovery process, rinsing time is 1～2h; Described drying and roasting process is carried out under compressed air atmosphere, and pressure setting is 0.1MPa, and baking temperature is 300～360 ℃,, be 2～3h drying time.
Compared with prior art, the present invention has following remarkable result:
(1) SCR catalyst activity test of the present invention shares a set of reacting furnace with regeneration, realized the compound of regeneration and regeneration front and back active testing function, after catalyst regeneration, can directly carry out active testing, this systematic economy is efficient, the dismounting of catalyst and the workload of again loading, remarkable in economical benefits have been greatly reduced;
(2) circulatory pool of the present invention can add deionized water, acid solution, composite regenerated liquid etc., can realize the functions such as washing, pickling and composite cleaning of SCR catalyst according to user's request, and simple in structure, regenerative process is convenient, easy operating;
(3) the present invention can realize purging, washing, rinsing, the drying and other steps to decaying catalyst by threeway changeover valve, needn't dismounting catalyst in regenerative process, simplified regeneration step, and avoided the wearing and tearing of being dismounted for multiple times process to catalyst;
(4) in active testing system of the present invention, NH3 gas circuit directly passes into reacting furnace top, has reduced NH
3with SO
2side reaction occur, avoided the sulfate and the obstruction of ammonium sulfate salt material to system that generate;
(5) reacting furnace of the present invention can be loaded the small-sized test module of catalyst or catalyst monomer test module, meets catalyst activity test and the regeneration effect evaluation requirements of different user, has a good application prospect.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing is the overall structure schematic diagram of the evaluating combined device of SCR denitrating catalyst regeneration effect of the present invention.
Description of reference numerals
1, reacting furnace; 2, switch valve; 3, gas cylinder group; 4, pressure-reducing valve; 5, mass flowmenter; 6, heater; 7, temperature controller; 8, mix preheating furnace; 9, water evaporation device; 10, gas analyzer; 11, threeway changeover valve; 12, compressed air reservoir; 13, circulating pump; 14, circulatory pool; 15, dosing mouth; 16, floss hole; 17, washer jet; 18, condensation absorption plant; 19, every hawk; 20, ash collection slot; 21, insulating.
The specific embodiment
As shown in drawings, before and after SCR denitrating catalyst regeneration of the present invention and regeneration, the set composite of active testing, comprises the active testing system and the regenerative system that share a vertical response stove 1, and the import/export of vertical response stove 1 is respectively provided with a set of gas analyzer.
Active testing system comprises NH
3, N
2, O
2, SO
2, NO gas cylinder 3, water evaporation device 9, mix preheating furnace 8, reacting furnace 1 and condensation absorption plant 18; NH
3gas cylinder 3 is connected to reacting furnace 1 entrance, N by pipeline
2, O
2, SO
2, NO gas cylinder 3 with mix preheating furnace 8 and pass through pipeline connection, each gas passes to mix in preheating furnace 8 and mixes and preheat, water evaporation device 9 is connected to and is mixed preheating furnace 8 entrances by pipeline, the steam producing passes into and mixes in preheating furnace 8, mixing preheating furnace 8, reacting furnace 1 are connected successively with condensation absorption plant 18, each gas, after mixing, preheating, reaction, is discharged through 18 post processings of condensation absorption plant.
Regenerative system comprises compressed air reservoir 12, circulatory pool 14, circulating pump 13, threeway changeover valve 11, washer jet 17, every hawk 19, ash collection slot 20; Compressed air reservoir 12 is connected to threeway changeover valve 11 by pipeline, circulatory pool 14 is connected by pipeline with circulating pump 13, circulating pump 13 outlets are connected to threeway changeover valve 11 by pipeline, threeway changeover valve 11 is connected to washer jet 17 by pipeline, washer jet 17 is arranged in the top of reacting furnace 1, for the purging of reacting furnace 1 interior decaying catalyst and spray are cleaned.Every hawk 19, be arranged in the below of reacting furnace, the partition for purge to bottom pipeline, prevents and treats pipeline blockage, and described ash collection slot 20 is arranged in every the both sides of hawk 19, the dust stratification producing for collecting purge, and circulatory pool 14 is led in the outlet of ash collection slot 20.
Vertical response stove 1 can be realized the regeneration of denitration reaction process and catalyst and process, and is provided with heater 6 and temperature controller 7 in stove, according to different step, regulates temperature in corresponding stove.
Active testing system to reacting furnace 1, regenerative system is provided with switch valve 2 to the connecting line of reacting furnace 1, for the mutual isolation of regenerative system and active testing system; Mix preheating furnace 8 and be also provided with heater 6 and temperature controller 7, the temperature of mixing preheating furnace while controlling active testing is 300 ℃; NH
3, N
2, O
2, SO
2, NO gas cylinder 3 connecting line on be provided with pressure-reducing valve 4 and mass flowmenter 5, water evaporation device 9 and mix on the connecting line of preheating furnace 8 and be also provided with mass flowmenter 5, for the accurate control to each composition flow rate; On the pipeline that compressed air reservoir 12 is connected with threeway changeover valve 11, be also provided with pressure-reducing valve 4 and mass flowmenter 5, for controlling the purging pressure of purge; In circulatory pool 14, can add deionized water or regenerated liquid, circulating pump 13 outlets are also provided with mass flowmenter 5, for controlling to adjust the cleaning flow of cleaning process; The outer wall of reacting furnace 1 is also coated with one deck insulating 21; Circulatory pool 14 is also provided with dosing mouth 15 and floss hole 16, for interpolation and the replacing of solution in pond.
The course of work
Embodiment 1
Honeycomb fashion SCR denitrating catalyst monomer to an inactivation is regenerated and regeneration effect evaluation.The honeycomb type denitrification catalyst monomer that the catalyst A of getting is 150mm * 150mm * 870mm, key component is V
2o
5-WO
3/ TiO
2.
Implementation process comprises the steps:
(1) active testing before regeneration: the SCR catalyst of inactivation is packed in reacting furnace 1, closing switch valve 2C, 2D, by regenerative system isolation, opening switch valve 2A, 2B, carry out active testing to catalyst A, and active testing process is as follows:
First open N
2gas cylinder 3 and pressure-reducing valve 4, quality of regulation flowmeter 5, controls N
2flow is 10L/min; Heater 6, regulates temperature controller 7, and the temperature of setting respectively mixing preheating furnace 8 and reacting furnace 1 is 300 ℃ and 350 ℃; Until temperature rise to design temperature and stable after, open other gas cylinders 3 and water evaporation device 9, by the true empty-running speed of catalyst A and Gas Parameters, set, by mass flowmenter 4, regulate inlet flue gas parameters as following table:
| Project | Unit |
| O 2 | 3.9（Vol%） |
| SO 2 | 0.06（Vol%） |
| H 2O | 9.6（Vol%） |
| NO | 450（mg/Nm 3） |
| NH 3 | 450（mg/Nm 3） |
| N 2 | Other |
Opening switch valve 2E, 2F, open gas analyzer 10 respectively, to importing and exporting NO concentration, measures, and after measuring concentration stabilize 30min, starts to record NO concentration, and calculate the catalyst A activity constant K before regeneration
1value, for 14.71m/h, completes active testing process.
(2) actual reproduction of catalyst: the regenerative process of the present embodiment comprises the steps:
1. purge deashing: closing switch valve 2A, opening switch valve 2C, regulates threeway changeover valve 11 to compressed air communication pipeline, opens compressed air reservoir 12, adopts oil-free compressed air to carry out purge, removes the dust stratification on catalyst duct and surface; Keeping purging pressure is 0.5MPa, continues to purge 30min;
2. solution cleans: closing switch valve 2B, opening switch valve 2D, regulate threeway changeover valve 11 to circulating pump 13 connecting pipelines, by dosing mouth 15, regenerated liquid (the present embodiment is selected sulfuric acid solution and deionized water preparation) is packed in circulatory pool 14, regulating pH is 5.0, by circulating pump 13, the interior solution of circulatory pool 14 is inputted in reacting furnaces 1 by washer jet 17, and catalyst A is sprayed to cleaning, continue wash cycles 3h, by floss hole 16, solution is discharged;
3. rinsing recovers: deionized water is packed in circulatory pool 14, by circulating pump 13, deionized water is inputted in reacting furnace 1, catalyst A is carried out to rinsing Recovery processing, rinsing time is controlled as 1.5h;
4. drying and roasting: closing switch valve 2D, opening switch valve 2B, regulate threeway changeover valve 11 to compressed air communication pipeline, open reacting furnace heater 6, regulating reacting furnace temperature is 320 ℃, adopt oil-free compressed air to carry out drying and roasting processing to the catalyst A in reacting furnace 1, drying time, 1h, completed regenerative process.
(3) active testing after regeneration: the catalyst after regeneration is processed carries out active testing, and the same step of process (1), calculates the catalyst A activity constant K after regeneration
2value is 30.11m/h, and then calculates the regeneration recovery coefficient K of catalyst
hbe 2.05, regeneration effect is obvious.
Embodiment 2
Honeycomb fashion SCR denitrating catalyst monomer to an inactivation is regenerated and regeneration effect evaluation.The honeycomb type denitrification catalyst monomer that the catalyst B of getting is 150mm * 150mm * 900mm, key component is V
2o
5-WO
3/ TiO
2.
Implementation process comprises the steps:
(1) active testing before regeneration: the SCR catalyst of inactivation is packed in reacting furnace 1, closing switch valve 2C, 2D, by regenerative system isolation, opening switch valve 2A, 2B, carry out active testing to catalyst B, and active testing process is as follows:
First open N
2gas cylinder 3 and pressure-reducing valve 4, quality of regulation flowmeter 5, controls N
2flow is 10L/min; Heater 6, regulates temperature controller 7, and the temperature of setting respectively mixing preheating furnace 8 and reacting furnace 1 is 300 ℃ and 350 ℃; Until temperature rise to design temperature and stable after, open other gas cylinders 3 and water evaporation device 9, by the true empty-running speed of catalyst A and Gas Parameters, set, by mass flowmenter 4, regulate inlet flue gas parameters as following table:
| Project | Unit |
| O 2 | 4.1（Vol%） |
| SO 2 | 0.06（Vol%） |
| H 2O | 9.6（Vol%） |
| NO | 408（mg/Nm 3） |
| NH 3 | 408（mg/Nm 3） |
| N 2 | Other |
Opening switch valve 2E, 2F, open gas analyzer 10 respectively, to importing and exporting NO concentration, measures, and after measuring concentration stabilize 30min, starts to record NO concentration, and calculate the catalyst B activity constant K before regeneration
1value, for 18.63m/h, completes active testing process.
(2) actual reproduction of catalyst: the regenerative process of the present embodiment comprises the steps:
1. purge deashing: closing switch valve 2A, opening switch valve 2C, regulates threeway changeover valve 11 to compressed air communication pipeline, opens compressed air reservoir 12, adopts oil-free compressed air to carry out purge, removes the dust stratification on catalyst duct and surface; Keeping purging pressure is 0.6MPa, continues to purge 45min;
2. solution cleans: closing switch valve 2B, opening switch valve 2D, regulate threeway changeover valve 11 to circulating pump 13 connecting pipelines, by dosing mouth 15, regenerated liquid (the present embodiment is selected acetum and deionized water preparation) is packed in circulatory pool 14, regulating pH is 5.0, by circulating pump 13, the interior solution of circulatory pool 14 is inputted in reacting furnaces 1 by washer jet 17, and catalyst A is sprayed to cleaning, continue wash cycles 2h, by floss hole 16, solution is discharged;
3. rinsing recovers: deionized water is packed in circulatory pool 14, by circulating pump 13, deionized water is inputted in reacting furnace 1, catalyst A is carried out to rinsing Recovery processing, rinsing time is controlled as 1h;
4. drying and roasting: closing switch valve 2D, opening switch valve 2B, regulate threeway changeover valve 11 to compressed air communication pipeline, open reacting furnace heater 6, regulating reacting furnace temperature is 320 ℃, adopt oil-free compressed air to carry out drying and roasting processing to the catalyst B in reacting furnace 1, drying time, 1h, completed regenerative process.
(3) active testing after regeneration: the catalyst after regeneration is processed carries out active testing, and the same step of process (1), calculates the catalyst B activity constant K after regeneration
2value is 33.87m/h, and then calculates the regeneration recovery coefficient K of catalyst
hbe 1.82, regeneration effect is obvious.
Claims (10)
1. the set composite of active testing before and after SCR denitrating catalyst regeneration and regeneration, comprise active testing system and regenerative system, it is characterized in that: described active testing system comprises vertical response stove (1), and the import/export of vertical response stove is respectively provided with a set of gas analyzer; Described regenerative system comprises compressed air reservoir (12), circulatory pool (14), circulating pump (13), threeway changeover valve (11), washer jet (17), every hawk (19), ash collection slot (20), the compressed air of described compressed air reservoir (12) and being delivered to respectively after threeway changeover valve (11) by the regenerated liquid that circulating pump (13) pumps circulatory pool (14), then the washer jet (17) of top of reacting furnace (1) inner chamber through being arranged in active testing system to reacting furnace in decaying catalyst purge and spray cleaning; Every hawk (19), be arranged in the below of reacting furnace inner chamber, for the partition of purge to bottom pipeline, prevent and treat pipeline blockage, ash collection slot (20) is arranged in the both sides every hawk, the dust stratification producing for collecting purge, circulatory pool (14) is led in the outlet of ash collection slot (20).
2. the set composite of active testing before and after SCR denitrating catalyst regeneration according to claim 1 and regeneration, is characterized in that: described active testing system comprises NH3, N2, O2, SO2, NO gas cylinder group (3), water evaporation device (9), mixes preheating furnace (8), reacting furnace (1) and condensation absorption plant (18); Described NH3 gas cylinder is connected directly to reacting furnace entrance by pipeline, described N2, O2, SO2, NO gas cylinder and mix preheating furnace (8) and pass through pipeline connection, each gas passes to mix in preheating furnace and mixes and preheat, described water evaporation device (9) is connected to and is mixed preheating furnace entrance by pipeline, the steam producing passes into and mixes in preheating furnace, described mixing preheating furnace (8), reacting furnace (1) and condensation absorption plant (18) are connected successively with pipeline, each gas, after mixing, preheating, reaction, is discharged through the post processing of condensation absorption plant.
3. the set composite of active testing before and after SCR denitrating catalyst according to claim 2 regeneration and regeneration, it is characterized in that: in described reacting furnace stove, be provided with heater (6) and temperature controller (7), according to different step, regulate temperature in corresponding stove.
4. the set composite of active testing before and after SCR denitrating catalyst according to claim 3 regeneration and regeneration, it is characterized in that: described active testing system to reacting furnace, regenerative system is provided with switch valve to the connecting line of reacting furnace, for the mutual isolation of regenerative system and active testing system.
5. the set composite of active testing before and after SCR denitrating catalyst according to claim 4 regeneration and regeneration, it is characterized in that: described mixing preheating furnace is also provided with heater and temperature controller, the temperature of mixing preheating furnace while controlling active testing is 300 ℃.
6. the set composite of active testing before and after SCR denitrating catalyst regeneration according to claim 5 and regeneration, is characterized in that: described NH
3, N
2, O
2, SO
2, NO gas cylinder connecting line on be provided with pressure-reducing valve (4) and mass flowmenter (5), described water evaporation device and mix on the connecting line of preheating furnace and be also provided with mass flowmenter, for the accurate control to each composition flow rate.
7. the set composite of active testing before and after SCR denitrating catalyst according to claim 6 regeneration and regeneration, it is characterized in that: on the pipeline that described compressed air reservoir is connected with threeway changeover valve, be also provided with pressure-reducing valve and mass flowmenter, for controlling the purging pressure of purge.
8. the set composite of active testing before and after SCR denitrating catalyst according to claim 7 regeneration and regeneration, it is characterized in that: in described circulatory pool, can add deionized water or regenerated liquid, circulating-pump outlet is also provided with mass flowmenter, for controlling to adjust the cleaning flow of cleaning process.
9. the set composite of active testing before and after SCR denitrating catalyst regeneration according to claim 8 and regeneration, is characterized in that: the outer wall of described reacting furnace is also coated with one deck insulating (21).
10. the set composite of active testing before and after SCR denitrating catalyst regeneration according to claim 9 and regeneration, is characterized in that: described circulatory pool is also provided with dosing mouth (15) and floss hole (16), for interpolation and the replacing of solution in pond.
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|---|---|---|---|
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| CN103949290A (en) * | 2014-05-08 | 2014-07-30 | 北京中南亚太环境科技发展有限公司 | Method for recycling denitration catalyst |
| CN104475176A (en) * | 2014-11-25 | 2015-04-01 | 安徽迪诺环保新材料科技有限公司 | Method for regenerating out-of-work denitration catalyst |
| CN104923317A (en) * | 2015-06-10 | 2015-09-23 | 无锡威孚环保催化剂有限公司 | Regeneration device and process of anti-aging catalyst for lean-burn natural gas truck |
| CN105510532A (en) * | 2015-12-16 | 2016-04-20 | 河北省电力建设调整试验所 | Denitration catalytic performance evaluation system and method |
| CN105628858A (en) * | 2016-03-21 | 2016-06-01 | 浙江海亮环境材料有限公司 | Catalyst performance testing system |
| CN105911227A (en) * | 2016-06-20 | 2016-08-31 | 西安交通大学 | Testing device capable of simultaneously measuring multiple SCR catalysts |
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| CN110694697A (en) * | 2019-11-29 | 2020-01-17 | 安徽元琛环保科技股份有限公司 | Secondary recovery processing system for denitration catalyst |
| CN112180051A (en) * | 2020-10-27 | 2021-01-05 | 国电环境保护研究院有限公司 | Carbon-based catalyst performance test device |
| CN113477279A (en) * | 2021-07-27 | 2021-10-08 | 苏州西热节能环保技术有限公司 | Waste heat utilization method and device in denitration catalyst regeneration process |
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| CN103949290A (en) * | 2014-05-08 | 2014-07-30 | 北京中南亚太环境科技发展有限公司 | Method for recycling denitration catalyst |
| CN104475176A (en) * | 2014-11-25 | 2015-04-01 | 安徽迪诺环保新材料科技有限公司 | Method for regenerating out-of-work denitration catalyst |
| CN104475176B (en) * | 2014-11-25 | 2017-05-31 | 安徽迪诺环保新材料科技有限公司 | One kind failure denitrating catalyst renovation process |
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| CN105510532A (en) * | 2015-12-16 | 2016-04-20 | 河北省电力建设调整试验所 | Denitration catalytic performance evaluation system and method |
| CN105628858A (en) * | 2016-03-21 | 2016-06-01 | 浙江海亮环境材料有限公司 | Catalyst performance testing system |
| CN105911227A (en) * | 2016-06-20 | 2016-08-31 | 西安交通大学 | Testing device capable of simultaneously measuring multiple SCR catalysts |
| CN105911227B (en) * | 2016-06-20 | 2018-01-05 | 西安交通大学 | A kind of test device that can measure a variety of SCR catalysts simultaneously |
| CN107376635A (en) * | 2016-08-18 | 2017-11-24 | 天津大唐国际盘山发电有限责任公司 | A kind of anti-cold operation automatic protecting method of catalyst for denitrating flue gas and control system |
| CN107376635B (en) * | 2016-08-18 | 2020-02-11 | 天津大唐国际盘山发电有限责任公司 | Automatic protection method and control system for preventing low-temperature operation of flue gas denitration catalyst |
| CN106765252A (en) * | 2016-12-23 | 2017-05-31 | 北京建筑大学 | A kind of fountain flue gas waste heat recovery and cleaning system |
| CN106547286A (en) * | 2016-12-26 | 2017-03-29 | 北京神雾环境能源科技集团股份有限公司 | flue gas SCR denitration intelligent temperature control device |
| CN108097045A (en) * | 2017-12-28 | 2018-06-01 | 广州发展集团股份有限公司 | A kind of method of denitrating catalyst recycling utilization |
| CN110694697A (en) * | 2019-11-29 | 2020-01-17 | 安徽元琛环保科技股份有限公司 | Secondary recovery processing system for denitration catalyst |
| CN113916010A (en) * | 2020-07-10 | 2022-01-11 | 中冶长天国际工程有限责任公司 | Rotary kiln-chain grate machine flue gas treatment process and system for flue gas treatment |
| CN113916010B (en) * | 2020-07-10 | 2023-11-10 | 中冶长天国际工程有限责任公司 | Rotary kiln-grate machine flue gas treatment process and system for flue gas treatment |
| CN112180051A (en) * | 2020-10-27 | 2021-01-05 | 国电环境保护研究院有限公司 | Carbon-based catalyst performance test device |
| CN113477279A (en) * | 2021-07-27 | 2021-10-08 | 苏州西热节能环保技术有限公司 | Waste heat utilization method and device in denitration catalyst regeneration process |
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