CN105032502B - Mn Ce/ activity char catalyst washing and drying combining and regenerating methods - Google Patents
Mn Ce/ activity char catalyst washing and drying combining and regenerating methods Download PDFInfo
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- CN105032502B CN105032502B CN201510468350.5A CN201510468350A CN105032502B CN 105032502 B CN105032502 B CN 105032502B CN 201510468350 A CN201510468350 A CN 201510468350A CN 105032502 B CN105032502 B CN 105032502B
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Abstract
The invention provides a kind of combining and regenerating method of the active char catalyst washing and dryings of Mn Ce/, this method completes the washing to the active char catalysts of Mn Ce/ and drying process in a washing and drying combining and regenerating device, finally gives the active char catalysts of the Mn Ce/ after regeneration；Detailed process comprises the following steps：(1) water rinses：The active char catalysts of the Mn Ce/ of inactivation are put into washing and drying combining and regenerating device, the surface of the active char catalysts of Mn Ce/, and the cleaning flue gases introduced into washing and drying combining and regenerating device after desulphurization denitration are cleaned with water, cleaning empties waste water after finishing；(2) drying stage：Continue the cleaning flue gases introduced after desulphurization denitration into the washing and drying combining and regenerating device after emptying waste water, for drying the active char catalysts of Mn Ce/.The inventive method has the advantages that flow is simple and convenient to operate, saved floor occupying area, and regenerated catalyst desulfuration efficiency reaches more than 90%, and denitration efficiency can reach 60% or so, has broad application prospects.
Description
Technical field
The invention belongs to environmental protection and catalytic field, and in particular to a kind of active char catalyst washings of Mn-Ce/-drying joint
Renovation process.
Background technology
Mn-Ce/ activity char catalysts are mainly used in moving-burden bed reactor, have very under low temperature (such as 120 DEG C) environment
Desulfurization off sulfide effect while good, its desulfuration efficiency is up to more than 90%, and denitration efficiency is 80% or so.But, Mn-Ce/ lives
Property char catalyst can due to absorption SO2And surface deposition fraction ammonium sulfate, removal efficiency decline, ultimately result in catalyst mistake
It is living, certain puzzlement and trouble are caused to production technology.If can be regenerated to the active char catalysts of Mn-Ce/ of inactivation,
Catalyst is recycled, be the resource reutilization tallied with the national condition a technology, with good development prospect.
Original washing regeneration activity Jiao is to be used further to desulfurization and denitrification reaction after activated coke is washed and dried, but actual
In operation, washing regeneration is dried the two processes with activated coke and often carried out respectively, and time-consuming and it is insufficient to wash, and reduces work
Property burnt regeneration efficiency.At present washing regeneration techniques it is also immature, the problem of solving following of still needing：(1) washing is with doing
Dry separated progress, floor space is big；(2) wash insufficient, activated coke regeneration effect is bad；(3) waste liquid produced after washing is difficult
In processing, the development of washing process is hindered；(4) can not industrially large-scale promotion application.
The content of the invention
For shortcoming and deficiency present in prior art, the invention provides a kind of active char catalyst water of Mn-Ce/
Combining and regenerating method is washed-dries, washing and drying process are carried out in same apparatus system, be simple and convenient to operate with flow,
The advantages of saving floor occupying area, regenerated catalyst desulfurization and denitration efficiency are all higher, have broad application prospects.
The technical solution adopted for the present invention to solve the technical problems is：
The combining and regenerating method of Mn-Ce/ activity char catalyst washing-dryings, the combining and regenerating method a washing-
Dry and the washing to the active char catalysts of Mn-Ce/ and drying process are completed in combining and regenerating device, finally give after regeneration
Mn-Ce/ activity char catalysts；Detailed process comprises the following steps：
(1) water rinses：The active char catalysts of the Mn-Ce/ of inactivation are put into the washing-drying combining and regenerating device
It is interior, the surface of the active char catalysts of the Mn-Ce/ is cleaned with water, and introduce de- into the washing-drying combining and regenerating device
Cleaning flue gases after sulphur denitration, cleaning empties waste water after finishing；
(2) drying stage：Continue to introduce desulphurization denitration into the washing-drying combining and regenerating device after emptying waste water
Cleaning flue gases afterwards, for drying the active char catalysts of Mn-Ce/.
The bottom of the washing-drying combining and regenerating device is provided with blast cap and gas distribution pipe, can introduce clear after desulphurization denitration
Clean flue gas, the cleaning flue gases after being used to export the desulphurization denitration provided with exhanst gas outlet at the top of the regenerating unit；
Shower nozzle is provided with the top of the washing-drying combining and regenerating device, can be filled to the washing-drying combining and regenerating
Interior water spray is put, is used to discharge waste water provided with discharge outlet in the washing-drying combining and regenerating bottom of device.
The discharge outlet is connected with Sulphuric acid ammonium device, and the waste water is used to prepare ammonium sulfate.
Further, the temperature of the cleaning flue gases after the desulphurization denitration is 100 DEG C.
Further, the tolerance for the cleaning flue gases that the drying stage is introduced after desulphurization denitration is no less than the water rinses
2 times of the tolerance of the cleaning flue gases introduced after desulphurization denitration.
Further, the time of the water rinses is 30min；The time of the drying stage is 4h.
The device have the advantages that as follows：
(1) present invention utilizes cleaning flue gases in the same apparatus, has reached washing-drying combining and regenerating Mn-Ce/ activated cokes
The purpose of catalyst, saves transportation, has saved floor space and recovery time, efficent use of resources.
(2) cleaning flue gases are used to washing and drying the active char catalysts of Mn-Ce/, and cleaning flue gases derive from moving bed reaction
Flue gas after device desulphurization denitration, not only easily obtains, and have certain temperature, it is to avoid Repeat-heating air, is effectively saved energy
Source；And in water-washing process, cleaning flue gases are exported from the blast cap of bottom of device, bubble can be produced in water, promotes Mn-Ce/
Active char catalyst is fully contacted with water, so as to improve the regeneration efficiency of catalyst；Cleaning flue gases are introduced in the drying process, are had
The flue gas for having certain temperature can be with the drying of accelerator activator.
(3) the inventive method is used to prepare ammonium sulfate to the waste liquid after washing by processing, can eventually for manufacture chemical fertilizer
Obtain certain economic well-being of workers and staff.
(4) more than 90% is reached using the inventive method regenerated catalyst desulfuration efficiency, denitration efficiency can reach 60%
Left and right, can be re-used for the desulfurization and denitration of flue gas.
(5) technological process of the inventive method is simple, technical performance is good, convenient operation and management, non-secondary pollution, environment
With it is good in economic efficiency, meet requirement of the China to energy-saving and emission-reduction, with great development prospect.
Brief description of the drawings
Fig. 1 is the process chart of the inventive method：(a) it is the schematic diagram of water rinses, (b) is the signal of drying stage
Figure；
Wherein, the active char catalysts of the Mn-Ce/ of 1- inactivations, 2- exhanst gas outlets, 3- technique water tanks, 4- shower nozzles, 5- waste liquids,
Cleaning flue gases after 6- blast caps, 7- desulphurization denitrations, 8- water, the active char catalysts of Mn-Ce/ after 9- regeneration, 10- washings-drying
Combining and regenerating device.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in figure 1, being provided with blast cap 6 and gas distribution pipe in the bottom of washing-drying combining and regenerating device 10, introduce desulfurization and take off
Cleaning flue gases 7 after nitre, blast cleaning flue gases 7 during washing, bubble is produced in water, form disturbance, promote water 8 and inactivation
The abundant contact of Mn-Ce/ activity char catalysts 1；In continuous purging of the drying stage by cleaning flue gases 7, regeneration can be dried
The active char catalysts 9 of Mn-Ce/ afterwards, exhanst gas outlet 2 of the final cleaning flue gas 7 at the top of device is exported.
Technique water tank 3 is provided with the outside of washing-drying combining and regenerating device 10, the water 8 of technique water tank 3 can pass through device
In the jetting device of shower nozzle 4 at top；Discharge outlet is provided with the bottom of device, waste liquid 5 is exported.
Entrance is provided with the top of device, the active char catalysts 1 of Mn-Ce/ of inactivation are introduced, in bottom of device provided with outlet,
The active char catalysts 9 of the Mn-Ce/ after regeneration can be discharged.
The combining and regenerating technique of the present embodiment is divided into two stages completion Mn-Ce/ activated cokes in same apparatus system and urged
The regeneration of agent, is water rinses and regeneration stage respectively：
(1) water rinses：By Mn-Ce/ activity of the particle diameter produced in moving-burden bed reactor for 2.5~7.5mm inactivation
Char catalyst 1 is put into washing-drying combining and regenerating device 10, water 8 through in technique water tank 3 out of shower nozzle 4 jetting device, wherein,
The mass ratio of water 8 and the active char catalysts 1 of Mn-Ce/ of inactivation is 3:1；Treat that water 8 floods the active char catalysts 1 of Mn-Ce/, source
Blasted in the cleaning flue gases 7 after being handled through desulphurization denitration by blower fan, gas distribution pipe, blast cap 6 from bottom of device in device, flue gas with
The liquid-gas ratio 2 of water:1；Cleaning flue gases 7 derive from the flue gas after moving-burden bed reactor desulphurization denitration, and flue-gas temperature is 100 DEG C of left sides
The right side, cleaning flue gases 7 produce bubble in water 8, promote the active char catalysts 1 of Mn-Ce/ of inactivation fully to be contacted with water 8, washing 30
After minute, waste liquid 5 is discharged by the discharge outlet of bottom, and the removal of impurity is gone by precipitation, filtering, into Sulphuric acid ammonium device, is carried out
The production of ammonium sulfate.
Wherein, fully contacted with the active char catalysts 1 of the Mn-Ce/ inactivated as solvent with water 8, SO therein2With water 8
Reaction generation sulfurous acid (H2SO3), sulfuric acid (H2SO4), ammonium sulfate ((NH4)2SO4) and ammonium sulfite (((NH4)2SO3) it is dissolved in water
Ionize out sulfate ion (SO4 2-), ammonium ion (NH4 +) and sulfite ion (SO3 -).Wash (NH in waste liquid4)2SO4It is dense
Degree is up to 30-40%, through handling recyclable accessory substance ammonium sulfate, for chemical fertilizer production.Mn-Ce/ activated cokes after washing are urged
Agent is dried, and can be re-used for flue gas and desulfurizing and denitrifying reaction；Main chemical reactions are as follows：
SO2+H2O→H2SO3
2SO2+2H2O+O2→2H2SO4
(NH4)2SO3→2NH4 ++SO3 2-
2SO3 2-+O2→2SO4 2-(aerating oxidation)
(NH4)2SO4→2NH4 ++SO4 2-
The active char catalysts of washing regeneration Mn-Ce/, wash the recyclable processing of product, and it is ripe that it, which concentrates production ammonium sulfate,
Technique, ammonium sulfate is as a kind of fertilizer, with certain economic benefit.
(b) drying stage：Cleaning flue gases 7 are blasted to the active char catalyst relayings of Mn-Ce/ after draining are continuous, tolerance is water
Wash 3 times of stage, drying time 4h.Under the continuous purging of cleaning flue gases 7, Mn-Ce/ activity char catalysts obtain drying, do
The active char catalysts 9 of Mn-Ce/ after dry can continue on for the desulphurization denitration of flue gas, its denitration efficiency 60% or so, desulfuration efficiency
More than 90%.
Claims (4)
- The combining and regenerating method of 1.Mn-Ce/ activity char catalysts washing-drying, it is characterised in that the combining and regenerating method exists The washing to the active char catalysts of Mn-Ce/ and drying process are completed in one washing-drying combining and regenerating device, is finally given The active char catalysts of Mn-Ce/ after regeneration；The bottom of the washing-drying combining and regenerating device is provided with blast cap and gas distribution pipe, can The cleaning flue gases introduced after desulphurization denitration, are used to export the desulphurization denitration at the top of the regenerating unit provided with exhanst gas outlet Cleaning flue gases afterwards；Shower nozzle is provided with the top of the washing-drying combining and regenerating device, can be combined to the washing-drying Sprayed water in regenerating unit, be used to discharge waste water provided with discharge outlet in the washing-drying combining and regenerating bottom of device；Detailed process comprises the following steps：(1) water rinses：The active char catalysts of the Mn-Ce/ of inactivation are put into the washing-drying combining and regenerating device, used Water cleans the surface of the active char catalysts of the Mn-Ce/, and introducing desulfurization takes off into the washing-drying combining and regenerating device Cleaning flue gases after nitre, cleaning empties waste water after finishing；(2) drying stage：Continue to introduce after desulphurization denitration into the washing-drying combining and regenerating device after emptying waste water Cleaning flue gases, for drying the active char catalysts of Mn-Ce/；The tolerance for the cleaning flue gases that the drying stage is introduced after desulphurization denitration introduces desulphurization denitration no less than the water rinses 2 times of the tolerance of cleaning flue gases afterwards.
- 2. the combining and regenerating method of the active char catalyst washing-dryings of Mn-Ce/ according to claim 1, its feature exists In the discharge outlet is connected with Sulphuric acid ammonium device, and the waste water is used to prepare ammonium sulfate.
- 3. the combining and regenerating method of the active char catalyst washing-dryings of Mn-Ce/ according to claim 1 or 2, its feature It is, the temperature of the cleaning flue gases after the desulphurization denitration is 100 DEG C.
- 4. the combining and regenerating method of the active char catalyst washing-dryings of Mn-Ce/ according to claim 1 or 2, its feature It is, the time of the water rinses is 30min；The time of the drying stage is 4h.
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| CN201510468350.5A CN105032502B (en) | 2015-08-03 | 2015-08-03 | Mn Ce/ activity char catalyst washing and drying combining and regenerating methods |
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| CN201510468350.5A CN105032502B (en) | 2015-08-03 | 2015-08-03 | Mn Ce/ activity char catalyst washing and drying combining and regenerating methods |
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| CN105032502A CN105032502A (en) | 2015-11-11 |
| CN105032502B true CN105032502B (en) | 2017-10-10 |
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| CN116272929A (en) * | 2023-03-30 | 2023-06-23 | 西安热工研究院有限公司 | Active coke desulfurization and denitrification-regeneration-drying integrated system and method |
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| KR20080114051A (en) * | 2007-06-26 | 2008-12-31 | 한국전력공사 | Method for regenerating catalyst for de-nox |
| CN103464221B (en) * | 2013-09-03 | 2015-11-18 | 广东电网公司电力科学研究院 | SCR denitration system catalyst regeneration equipment and process of regenerating |
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