CN103418360B - A kind of desulphurization denitration active coke regeneration device and method - Google Patents
A kind of desulphurization denitration active coke regeneration device and method Download PDFInfo
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- CN103418360B CN103418360B CN201310345372.3A CN201310345372A CN103418360B CN 103418360 B CN103418360 B CN 103418360B CN 201310345372 A CN201310345372 A CN 201310345372A CN 103418360 B CN103418360 B CN 103418360B
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Abstract
The invention discloses a kind of desulphurization denitration active coke regeneration device and method, described regenerating unit comprises a regeneration reactor, described regeneration reactor is from top to bottom by import blocking valve, feeding warehouse, heating cabinet, regeneration storehouse, pre-cooled storehouse, cooling storehouse, discharging bin and outlet blocking valve are linked in sequence, heating heat exchanger assembly is provided with in described heating cabinet, pre-cooled heat exchanger assembly is provided with in described pre-cooled storehouse, cooling heat exchanger assembly is provided with in described cooling storehouse, one is also provided with for introducing year nitrogen storehouse of the desulphurization denitration performance of the rear activated coke of ammonia nitrogen gas raising regeneration in regenerative process between described pre-cooled storehouse and cooling storehouse.Described renovation process adopts described regenerating unit to carry out the regeneration of activated coke.The present invention can realize Appropriate application energy more in regenerative process, and after making regeneration, the desulphurization denitration performance of activated coke is further enhanced, and can carry out online modification, keeping the desulphurization denitration performance that activated coke is high by carrying nitrogen storehouse to activated coke.
Description
Technical field
The present invention relates to activated coke technical field of regeneration, particularly relate to a kind of desulphurization denitration active coke regeneration device and method.
Background technology
At present in the industrial furnace such as boiler of power plant, smelting iron and steel flue gas desulfurization technique, active coke desulphurizing combined purifying technique, with its water saving, integrated purifying, non-secondary pollution, reclaims the advantages such as Sulphur ressource and is at home and abroad applied.After adopting activated coke adsorption, desulfurization, denitration, lose activity, must regenerate, activity recovery, then recycle, therefore activated coke regenerates the workshop section that is absolutely necessary.Activated coke regeneration is divided into regenerate with water and thermal regeneration, because regenerate with water accessory substance is dilute sulfuric acid, utilizes inconvenient, has stronger corrosivity simultaneously, so thermal regeneration is the method extensively adopted at present.
On January 23rd, 2002, the present inventor applied for that name is called the patent of invention of " moving desorptive equipment for activated coke ", application number is application number 02112580.5, achieves good effect.The main body of this desorption apparatus is formed primarily of heating cabinet and cooling storehouse, adopts the mode of indirect, solves the regeneration issues of activated coke, achieve the reasonable employment of the energy, have higher desorption performance.In June, 2009, application name is called " movable desorption device of activated coke ", application number 200910057347.9, bringing-up section is sent in heat transferring medium input after heating of activated coke cooling section, for the cooling of activated coke after gas after heating adopts heat exchanger to cool, system energy efficiency utilizes not too high, requires high to regenerator exchange capability of heat.Existing active coke regenerating equipment is at the SO of charging aperture due to activated coke physical absorption in sweetening process
2the easy desorption when low temperature, the hot gas of generation upwards, easily causes corrosion to tower top, produces blocking to import blocking valve simultaneously.
Summary of the invention
In view of the deficiency that above-mentioned prior art exists, the present invention proposes one can solve existing equipment Problems existing further, particularly can realize Appropriate application energy more in regenerative process, the desulphurization denitration active coke regeneration device that after making regeneration, the desulphurization denitration performance of activated coke is further enhanced and method.
The present invention is for achieving the above object, a kind of desulphurization denitration active coke regeneration device provided by the invention, comprise a regeneration reactor, described regeneration reactor is from top to bottom by import blocking valve, feeding warehouse, heating cabinet, regeneration storehouse, pre-cooled storehouse, cooling storehouse, discharging bin and outlet blocking valve are linked in sequence, the heating heat exchanger assembly for heating described heating cabinet is provided with in described heating cabinet, the pre-cooled heat exchanger assembly for cooling described pre-cooled storehouse is provided with in described pre-cooled storehouse, the cooling heat exchanger assembly for cooling described cooling storehouse is provided with in described cooling storehouse, one is also provided with for introducing year nitrogen storehouse of the desulphurization denitration performance of the rear activated coke of ammonia nitrogen gas raising regeneration in regenerative process between described pre-cooled storehouse and cooling storehouse.
As a further improvement on the present invention, described heating cabinet and described pre-cooled storehouse are connected to form a heat circulating system by heating heat exchanger assembly, circulating fan, heater and pre-cooled heat exchanger assembly, described heat circulating system is that the heat medium delivery outlet of described heating heat exchanger assembly is connected by the cooling medium input port conducting of circulating fan with described pre-cooled heat exchanger assembly, and the cooling medium delivery outlet of described pre-cooled heat exchanger assembly is connected with the heat medium input port conducting of described heating heat exchanger assembly by after heating devices heat.
As a further improvement on the present invention, described heater is electric heater or hot-blast stove.
As a further improvement on the present invention, described year nitrogen storehouse is provided with the import of nitrogen carrier gas body, the import of described nitrogen carrier gas body is arranged in parallel ammonia valve and nitrogen valve, the import of described nitrogen carrier gas body is connected with ammonia gas circuit by ammonia valve, and the import of described nitrogen carrier gas body is connected with nitrogen gas circuit by nitrogen valve.
As a further improvement on the present invention, be provided with the first air guide mechanism at described year in nitrogen storehouse, described first air guide mechanism and described nitrogen carrier gas body inlet guide lead to and connect.
As a further improvement on the present invention, the second air guide mechanism and regeneration gas outlet is provided with in described regeneration storehouse, described second air guide mechanism and described regeneration gas outlet guide lead to and connect, and described regeneration gas outlet are also provided with one and reclaim for desorption gas and to control the regeneration blower fan of pressure parameter in described regeneration reactor.
As a further improvement on the present invention, described heating heat exchanger assembly, described pre-cooled heat exchanger assembly and/or described cooling heat exchanger assembly are tubular heat exchanger structure or coil exchanger structure.
As a further improvement on the present invention, be positioned in described feeding warehouse immediately below feeding warehouse entrance and be provided with distributing device, be provided with the first nitrogen blow valve port for importing nitrogen and the 3rd air guide mechanism in the bottom of described feeding warehouse, described 3rd air guide mechanism is connected with described first nitrogen blow valve port conducting.
As a further improvement on the present invention, described discharging bin top is provided with the second nitrogen blow valve port for importing nitrogen and the 4th air guide mechanism, and described 4th air guide mechanism is connected with described second nitrogen blow valve port conducting.
As a further improvement on the present invention, described discharging bin comprises drapery panel, cloth cone and reclaiming cone bucket, and described reclaiming cone bucket is microscler cone, and cone angle is greater than 60 °, the drift angle of described cloth cone is less than 60 °, between described cloth cone and reclaiming cone bucket, arrange the drapery panel that inclination angle is 65 ° ~ 70 °.
In addition, the present invention also provides a kind of desulphurization denitration reactive coke regeneration method, and it comprises the steps: to adopt above-mentioned desulphurization denitration active coke regeneration device to carry out the regeneration of activated coke, comprises the steps:
Activated coke after step one, desulphurization denitration enters described feeding warehouse by described import blocking valve, through just evenly and reposefully entering described heating cabinet to the activated coke of the described distributing device of feeding warehouse entrance; Meanwhile, purge nitrogen and import in described 3rd air guide mechanism from the described first nitrogen blow valve port of described feeding warehouse bottom, exported by described 3rd air guide mechanism, make regeneration reactor top keep the environment of nitrogen, simultaneously by the SO of physical absorption
2, NOx and ammonia be blown into described heating cabinet, and the NOx of physical absorption is at high temperature reduced, the corrosion of effective minimizing equipment simultaneously and pollution.
Step 2, the activated coke entering described heating cabinet are heated to 400-450 DEG C, then described regeneration storehouse is entered, the gas regenerating the desorbing gas generation produced at described heating cabinet and described regeneration storehouse exports extraction by regenerating the regeneration gas of blower fan from regeneration storehouse, sends into byproduct for treatment workshop section.
The activated coke dependence gravity of step 3, process regeneration continues to enter pre-cooled storehouse downwards and carries out pre-cooled, in pre-cooled storehouse, activated coke is recycled the cycle heat exchange medium cooling that blower fan is sent here, described cycle heat exchange medium is inert gas or air, described cycle heat exchange medium from heat medium delivery outlet out time temperature be 220-270 DEG C, be preferably 250 DEG C.Described cycle heat exchange medium enters in pre-cooled heat exchanger assembly by circulating fan and cooling medium input port, cools the activated coke in pre-cooled storehouse, uses pre-cooled storehouse activated coke temperature at 280-330 DEG C, is preferably about 300 DEG C.Cycle heat exchange medium is heated simultaneously, then heater is entered by cooling medium delivery outlet, cycle heat exchange medium carries out makeup energy by heater, cycle heat exchange medium is heated to 400-450 DEG C and enters heating cabinet again in heater, thus described heating cabinet and described pre-cooled storehouse are connected to form a heat circulating system by heating heat exchanger assembly, circulating fan, heater and pre-cooled heat exchanger assembly.
Step 4, activated coke after pre-cooled enter carries a nitrogen storehouse, the ammonia nitrogen mist containing 3-5% ammonia is passed into by the import of nitrogen carrier gas body, described mist upwards flows under the effect of regeneration blower fan, in pre-cooled storehouse and regeneration storehouse, nitrogen is carried to activated coke, increase nitrogen-containing functional group in activated coke, ammonia also participates in regenerative response simultaneously, effectively can reduce the ablation of activated coke and the output of CO.
Step 5, enter cooling storehouse from carrying an activated coke of discharging in nitrogen storehouse, the activated coke medium that is cooled is cooled to 100-150 DEG C, is preferably about 120 DEG C.Discharge regeneration reactor through discharging bin, adopt nitrogen to purge at discharging bin, make activated coke desorption clean, block entering of oxygen further simultaneously.
The beneficial effect of inventive desulfurization denitrification activated coke regenerating unit is as follows:
1. desulphurization denitration active coke regeneration device of the present invention is provided with and carries nitrogen storehouse, achieve the online modification of activated coke, keep the desulphurization denitration performance that activated coke is high, pass into the ammonia nitrogen mist carried in nitrogen storehouse and block entering of oxygen further, effectively avoid the ablation of activated coke, and effectively stop regeneration desorption gas to flow downward, thus it is more thorough that regeneration desorption gas is extracted.
2. desulphurization denitration active coke regeneration device of the present invention arrange the temperature of carrying the ammonia nitrogen gas passed in nitrogen storehouse than from pre-cooled storehouse activated coke temperature out much lower, play the effect of cooling activated coke further, reduce the temperature entering cooling storehouse activated coke, cushion the temperature rate of change in regenerator, improve the stability of the operation of device.
3. first air guide mechanism carrying setting in nitrogen storehouse of desulphurization denitration active coke regeneration device of the present invention, gas distribution is more even, and activated coke surface uniform carries nitrogen, and ensures that activated coke is smooth and easy and flow downward, avoid because activated coke piles up the local overheating phenomenon caused, improve the security performance of equipment.
4. desulphurization denitration active coke regeneration device of the present invention is by being divided into pre-cooled storehouse and the cooling storehouse of two temperature grades by cooling section, effectively improve the heat exchange logarithmic temperature difference of heating cabinet, heightened heat transfer intensity, make device usefulness higher, using energy source is more reasonable, and heating energy source is convenient, flexible.
5. year nitrogen storehouse of desulphurization denitration active coke regeneration device of the present invention provides the mist of ammonia and nitrogen, this mist upwards flows under the effect of regeneration blower fan, in pre-cooled storehouse and regeneration storehouse, nitrogen is carried to activated coke, nitrogen-containing functional group in effective increase activated coke, ammonia also participates in regenerative response simultaneously, can reduce the growing amount of CO further.
6. desulphurization denitration active coke regeneration device of the present invention has set up the 3rd air guide mechanism and the 4th air guide mechanism, pass into nitrogen at feeding warehouse and discharging bin by the first nitrogen blow valve port and the second nitrogen blow valve port to purge, in intermediate regeneration storehouse by described second air guide mechanism, described regeneration gas and described regeneration exhaust fan, regeneration gas is made to extract thoroughly, avoid the corrosion of low-temperature zone, effective increase service life of the present invention, simultaneously can also by pressure parameter in regeneration air-blower control tower, optimizing operation, reaches efficient desorption.
7. desulphurization denitration reactive coke regeneration method of the present invention can carry out online modification by carrying nitrogen storehouse to activated coke, keep the desulphurization denitration performance that activated coke is high, simultaneously also can regeneration gas thoroughly in draw-out device, the corrosion of avoiding device, has higher usefulness.
Accompanying drawing explanation
The structural representation of Fig. 1 embodiment one desulphurization denitration active coke regeneration device.
Fig. 2 is the main TV structure schematic diagram of the distributing device of the present embodiment feeding warehouse.
Fig. 3 is the plan structure schematic diagram of the distributing device of the present embodiment feeding warehouse.
Fig. 4 is the structural representation of the present embodiment heat exchanger assembly.
Fig. 5 is the structural representation of other embodiment heat exchanger assemblies.
Fig. 6 is the structural representation of the another kind of heat exchanger assembly of other embodiments.
Fig. 7 is the main TV structure schematic diagram of the present embodiment air guide mechanism.
Fig. 8 is the plan structure schematic diagram of the present embodiment air guide mechanism.
Fig. 9 is the structural representation of the present embodiment discharging bin.
Figure 10 is the A-A schematic cross-section of Fig. 9.
Figure 11 is the structural representation of embodiment two desulphurization denitration active coke regeneration device.
Primary clustering symbol description in figure:
1. import blocking valve, 2. feeding warehouse, 201. distributing device, 202. the 3rd air guide mechanisms, 203. first nitrogen blow valve ports, 3. heating cabinet, 301. heat medium delivery outlets, 302. heat medium input ports, 303. heating heat exchanger assemblies, 4. heater, 11. regeneration storehouses, 1101. regeneration gas exports, 1102. the second air guide mechanism, 12. regeneration blower fans, 5. pre-cooled storehouse, 501. cooling medium delivery outlets, 502. cooling medium input ports, 503. pre-cooled heat exchanger assemblies, 6. circulating fan, 7. year nitrogen storehouse, 701. nitrogen carrier gas body imports, 702. first air guide mechanisms, 703. ammonia valves, 704. nitrogen valves, 8. cool storehouse, 803. cooling heat exchanger assemblies, 13. cooling blowers, 9. discharging bin, 901. second nitrogen blow valve ports, 902. the 4th air guide mechanisms, 903. drapery panel, 904. cloth cones, 905. reclaiming cone buckets, 10 outlet blocking valves, A1. heat exchanger tube, A2. left collection chamber, A3. right collection chamber.
Detailed description of the invention
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Embodiment one:
The structural representation of Fig. 1 embodiment one desulphurization denitration active coke regeneration device.As shown in Figure 1, a kind of desulphurization denitration active coke regeneration device that the present embodiment proposes, comprise a regeneration reactor, described regeneration reactor is from top to bottom by import blocking valve 1, feeding warehouse 2, heating cabinet 3, regeneration storehouse 11, pre-cooled storehouse 5, cooling storehouse 8, discharging bin 9 and outlet blocking valve 10 are linked in sequence, the heating heat exchanger assembly 303 for heating heating cabinet 3 is provided with in heating cabinet 3, the pre-cooled heat exchanger assembly 503 for cooling pre-cooled storehouse 5 is provided with in pre-cooled storehouse 5, the cooling heat exchanger assembly 803 for cooling cooling storehouse 8 is provided with in cooling storehouse 8, one is also provided with for introducing year nitrogen storehouse 7 of the desulphurization denitration performance of the rear activated coke of ammonia nitrogen gas raising regeneration in regenerative process between pre-cooled storehouse 5 and cooling storehouse 8.
Concrete, heating cabinet 3 and pre-cooled storehouse 5 are connected to form a heat circulating system by heating heat exchanger assembly 303, circulating fan 6, heater 4 and pre-cooled heat exchanger assembly 503, described heat circulating system is that the heat medium delivery outlet 301 of heating heat exchanger assembly 303 is connected by cooling medium input port 502 conducting of circulating fan 6 with pre-cooled heat exchanger assembly 503, and the cooling medium delivery outlet 501 of pre-cooled heat exchanger assembly 503 is connected with heat medium input port 302 conducting of heating heat exchanger assembly 303 after being heated by heater 4.
Exemplary, as shown in Figure 1, the heater 4 of the present embodiment adopts electric heater.Carry on nitrogen storehouse 7 and be provided with nitrogen carrier gas body import 701, nitrogen carrier gas body import 701 is arranged in parallel ammonia valve 703 and nitrogen valve 704, nitrogen carrier gas body import 701 is connected with ammonia gas circuit by ammonia valve 703, and nitrogen carrier gas body import 701 is connected with nitrogen gas circuit by nitrogen valve 704.
Shown in composition graphs 1, in year nitrogen storehouse 7, be provided with the first air guide mechanism 702, first air guide mechanism 702 be connected with nitrogen carrier gas body import 701 conducting.The second air guide mechanism 1102 and regeneration gas outlet 1101 is provided with in regeneration storehouse 11, second air guide mechanism 1102 and regeneration gas export 1101 conductings and are connected, and regeneration gas outlet 1101 are also provided with one for desorption gas recovery and the regeneration blower fan 12 controlling pressure parameter in described regeneration reactor.Being positioned in feeding warehouse 2 immediately below feeding warehouse entrance and being provided with distributing device 201, being provided with the first nitrogen blow valve port 203 for importing nitrogen in the bottom of feeding warehouse 2 and the 3rd air guide mechanism the 202, three air guide mechanism 202 is connected with the first nitrogen blow valve port 203 conducting.Discharging bin 9 top is provided with the second nitrogen blow valve port 901 for importing nitrogen and the 4th air guide mechanism the 902, four air guide mechanism 902 is connected with the second nitrogen blow valve port 901 conducting.
Fig. 7 is the main TV structure schematic diagram of the present embodiment air guide mechanism, and Fig. 8 is the plan structure schematic diagram of the present embodiment air guide mechanism.As shown in Figure 7 and Figure 8, first air guide mechanism 702, second air guide mechanism 1102 of the present embodiment, the 3rd air guide mechanism 202 and the 4th air guide mechanism 902 all adopt the air guide mechanism of structure as shown in Figure 6 and Figure 7, described air guide mechanism by multiple square cone bucket and cone bucket under pipe passageway form, the angle that any two adjacent cone headwalls are formed is 60 ~ 80 °, avoids the accumulation of activated coke.
Exemplary, as shown in Figures 2 and 3, the distributing device 201 on feeding warehouse 2 top, can be welded by the vertical steel plate at one piece of horizontal steel plate steel plate identical with four pieces of downward inclination angles and front and back belt rectangle hole, the vertical steel plate at band rectangle hole is welded on regeneration reactor housing.
Exemplary, Fig. 4 is the structural representation of the present embodiment heat exchanger assembly.As shown in Figure 4, the heating heat exchanger assembly 303 of the present embodiment, pre-cooled heat exchanger assembly 503 and cooling heat exchanger assembly 803 all adopt tubular heat exchanger structure as shown in Figure 3, activated coke walks tube side or shell from top to bottom, left collection chamber A2 and right collection chamber A3 is provided with at heat exchanger tube A1 two ends, many heat exchanger tube A1 are being arranged on same vertical plane, be convenient to activated coke pass through, reduce the wearing and tearing of activated coke.In the present embodiment, at the heat exchanger assembly of regeneration reactor inside, corrosion resistant stainless steel both all can be adopted to make, also only can adopt stainless steel to the heat exchanger tube being in high temperature section and other parts adopt carbon steel to make.
Of course, in other embodiments, described heating heat exchanger assembly, described pre-cooled heat exchanger assembly and/or described cooling heat exchanger assembly can also adopt heat exchanger assembly as shown in Figure 5 and Figure 6, as adopted coil exchanger structure.
Fig. 9 is the structural representation of the present embodiment discharging bin.As shown in Figure 9, in the present embodiment, the 4th air guide mechanism 902, cloth cone 904, drapery panel 903 and reclaiming cone bucket 905 is provided with in discharging bin 9, reclaiming cone bucket 905 is microscler cone, cone angle is greater than 60 °, the drift angle of cloth cone 904 is less than 60 °, between cloth cone 904 and reclaiming cone bucket 905, the drapery panel 903 that inclination angle is 65 ° ~ 70 ° is set, realize activated coke Uniform Flow in regeneration reactor, and be provided with the second nitrogen blow valve port 901, effectively reduce the corrosion of low-temperature zone equipment, improve the physical life of equipment.
The present embodiment also proposes a kind ofly to utilize above-mentioned desulphurization denitration active coke regeneration device to carry out the method for desulphurization denitration activated coke regeneration, and it comprises the steps:
Activated coke after step one, desulphurization denitration enters feeding warehouse 2 by import blocking valve 1, through just evenly and reposefully entering heating cabinet 3 to the activated coke of the distributing device 201 of feeding warehouse entrance; Meanwhile, purge nitrogen and import in the 3rd air guide mechanism 202 from the first nitrogen blow valve port 203 of feeding warehouse 2 bottom, exported by the 3rd air guide mechanism 202, make regeneration reactor top keep the environment of nitrogen, simultaneously by the SO of physical absorption
2, NOx and ammonia be blown into heating cabinet 3, the NOx of physical absorption is at high temperature reduced, reduces corrosion and the pollution of device.
Step 2, the activated coke entering heating cabinet 3 are heated to 400-450 DEG C, then regeneration storehouse 11 is entered, the gas produced at heating cabinet 3 and the desorbing gas of regeneration storehouse 11 regeneration generation exports 1101 extractions from the regeneration gas regenerating storehouse 11, feeding byproduct for treatment workshop section by regenerating blower fan 12.
The activated coke dependence gravity of step 3, process regeneration continues to enter pre-cooled storehouse 5 downwards and carries out pre-cooled, in pre-cooled storehouse 5, activated coke is recycled the cycle heat exchange medium cooling that blower fan 6 is sent here, cycle heat exchange medium is inert gas or air, described cycle heat exchange medium from heat medium delivery outlet 301 out time temperature be 220-270 DEG C, specifically can be 250 DEG C.Described cycle heat exchange medium enters in pre-cooled heat exchanger assembly 503 by circulating fan 6 and cooling medium input port 502, cools the activated coke in pre-cooled storehouse 5, and the activated coke temperature using pre-cooled storehouse 5, at 280-330 DEG C, specifically can be 300 DEG C.Cycle heat exchange medium is heated simultaneously, then heater 4 is entered by cooling medium delivery outlet 501, cycle heat exchange medium carries out makeup energy by heater 4, cycle heat exchange medium is heated to 400-450 DEG C and enters heating cabinet again in heater 4, thus heating cabinet 3 and pre-cooled storehouse 5 are connected to form a heat circulating system by heating heat exchanger assembly 303, circulating fan 6, heater 4 and pre-cooled heat exchanger assembly 503.
Step 4, activated coke after pre-cooled enter carries a nitrogen storehouse 7, the ammonia nitrogen mist containing 3-5% ammonia is passed into by nitrogen carrier gas body import 701, described mist upwards flows under the effect of regeneration blower fan 12, nitrogen is carried in pre-cooled storehouse 5 and regeneration 11 pairs, storehouse activated coke, increase nitrogen-containing functional group in activated coke, ammonia also participates in regenerative response simultaneously, effectively reduces the ablation of activated coke and the growing amount of CO.
Step 5, the activated coke of discharging from year nitrogen storehouse 7 enter cooling storehouse 8, the activated coke medium that is cooled is cooled to 100-150 DEG C, specifically can be 120 DEG C, regeneration reactor is discharged through discharging bin 9, nitrogen is adopted to purge at discharging bin 9, make activated coke desorption clean, block entering of oxygen further simultaneously, so far can complete whole regeneration flow process.
Exemplary, in the present embodiment, desulphurization denitration active coke regeneration device adopts electric heater as desorption thermal source, and the cycle heat exchange medium in heat circulating system opens the gas that oxygen content can be adopted to be less than 3%, also can adopt inert gas or air etc.Activated coke enters cooling storehouse 8 and continue cooling under the effect of cooling heat exchanger assembly 803 and cooling blower 13, then discharges through discharging bin 9, and the cooling medium that cooling storehouse 8 adopts can inert gas or air.
In regenerative process, feeding warehouse 2 and discharging bin 9 adopt nitrogen to purge, simultaneously the sealing of finishing device.Desulphurization denitration active coke regeneration device is when operating, a year nitrogen storehouse 7 is regulated to enter the flow of ammonia nitrogen mist and the concentration of ammonia nitrogen by ammonia valve 703 and nitrogen valve 704, the performance of activated coke regeneration is regulated, achieve the online modification of activated coke, keep the desulphurization denitration performance that activated coke is high.Activated coke enters from import blocking valve 1, after regeneration reactor, flows out from outlet blocking valve 10, completes regeneration process, continue on for desulphurization denitration.Wherein, by the adjustment to cycle heat exchange rate-of flow and temperature, can also realize the accurate control of regeneration temperature parameter, simultaneously by pressure parameter in regeneration air-blower control tower, optimizing operation, reaches efficient desorption.
Embodiment two:
Figure 11 is the structural representation of embodiment two desulphurization denitration active coke regeneration device.As shown in figure 11, the present embodiment and embodiment one difference are, the desulphurization denitration active coke regeneration device of the present embodiment adopts hot-blast stove as desorption thermal source, and namely the heater 4 of the present embodiment adopts the electric heater in hot-blast stove alternate embodiment one.Heater adjusts by the present embodiment, using the combustion air of a cooling-air part as hot-blast stove, produce high-temperature hot-air, mix with the heat transferring medium that refrigerating gas exports out, after control temperature about 500 DEG C, enter heating cabinet, activated coke is heated, reach desorption temperature to circulate, heat transferring medium is the flue gas of oxygen content less than 3%.Other concrete structures and renovation process can refer to the description in embodiment one, repeat no more herein.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a desulphurization denitration active coke regeneration device, comprise a regeneration reactor, it is characterized in that: described regeneration reactor is from top to bottom by import blocking valve, feeding warehouse, heating cabinet, regeneration storehouse, pre-cooled storehouse, cooling storehouse, discharging bin and outlet blocking valve are linked in sequence, the heating heat exchanger assembly for heating described heating cabinet is provided with in described heating cabinet, the pre-cooled heat exchanger assembly for cooling described pre-cooled storehouse is provided with in described pre-cooled storehouse, the cooling heat exchanger assembly for cooling described cooling storehouse is provided with in described cooling storehouse, one is also provided with for introducing year nitrogen storehouse of the desulphurization denitration performance of the rear activated coke of ammonia nitrogen gas raising regeneration in regenerative process between described pre-cooled storehouse and cooling storehouse,
Described year nitrogen storehouse is provided with the import of nitrogen carrier gas body, the import of described nitrogen carrier gas body is arranged in parallel ammonia valve and nitrogen valve, the import of described nitrogen carrier gas body is connected with ammonia gas circuit by ammonia valve, and the import of described nitrogen carrier gas body is connected with nitrogen gas circuit by nitrogen valve;
Be provided with the first air guide mechanism at described year in nitrogen storehouse, described first air guide mechanism and described nitrogen carrier gas body inlet guide lead to and connect;
The second air guide mechanism and regeneration gas outlet is provided with in described regeneration storehouse, described second air guide mechanism and described regeneration gas outlet guide lead to and connect, and described regeneration gas outlet are also provided with one and reclaim for desorption gas and to control the regeneration blower fan of pressure parameter in described regeneration reactor;
Described discharging bin top is provided with the second nitrogen blow valve port for importing nitrogen and the 4th air guide mechanism, and described 4th air guide mechanism is connected with described second nitrogen blow valve port conducting;
Being positioned in described feeding warehouse immediately below feeding warehouse entrance and being provided with distributing device, being provided with the first nitrogen blow valve port for importing nitrogen and the 3rd air guide mechanism in the bottom of described feeding warehouse, described 3rd air guide mechanism is connected with described first nitrogen blow valve port conducting;
Described first air guide mechanism, described second air guide mechanism, described 3rd air guide mechanism, described 4th air guide mechanism by multiple square cone bucket and cone bucket under pipe passageway form, the angle that any two adjacent cone headwalls are formed is 60 ~ 80 °.
2. desulphurization denitration active coke regeneration device as claimed in claim 1, it is characterized in that: described heating cabinet and described pre-cooled storehouse are by heating heat exchanger assembly, circulating fan, heater and pre-cooled heat exchanger assembly be connected to form a heat circulating system, described heat circulating system is that the heat medium delivery outlet of described heating heat exchanger assembly is connected by the cooling medium input port conducting of circulating fan with described pre-cooled heat exchanger assembly, the cooling medium delivery outlet of described pre-cooled heat exchanger assembly is connected with the heat medium input port conducting of described heating heat exchanger assembly by after heating devices heat.
3. desulphurization denitration active coke regeneration device as claimed in claim 2, is characterized in that: described heater is electric heater or hot-blast stove.
4. desulphurization denitration active coke regeneration device as claimed in claim 1, is characterized in that: described heating heat exchanger assembly, described pre-cooled heat exchanger assembly and/or described cooling heat exchanger assembly are tubular heat exchanger structure or coil exchanger structure.
5. a desulphurization denitration reactive coke regeneration method, is characterized in that: adopt the desulphurization denitration active coke regeneration device as described in claim as arbitrary in Claims 1-4 to carry out the regeneration of activated coke, comprise the steps:
Activated coke after step one, desulphurization denitration enters described feeding warehouse by described import blocking valve, through just evenly and reposefully entering described heating cabinet to the activated coke of the described distributing device of feeding warehouse entrance; Meanwhile, purge nitrogen and import in described 3rd air guide mechanism from the described first nitrogen blow valve port of described feeding warehouse bottom, make regeneration reactor top keep the environment of nitrogen, simultaneously by the SO of physical absorption
2, NOx and ammonia be blown into described heating cabinet, and the NOx of physical absorption is at high temperature reduced;
Step 2, the activated coke entering described heating cabinet are heated to 400-450 DEG C, then described regeneration storehouse is entered, the gas regenerating the desorbing gas generation produced at described heating cabinet and described regeneration storehouse exports extraction by regenerating the regeneration gas of blower fan from regeneration storehouse, sends into byproduct for treatment workshop section;
Step 3, activated coke dependence gravity through regenerating continues to enter pre-cooled storehouse downwards and carries out pre-cooled, in pre-cooled storehouse, activated coke is recycled the cycle heat exchange medium cooling that blower fan is sent here, described cycle heat exchange medium is inert gas or air, described cycle heat exchange medium from heat medium delivery outlet out time temperature be 220-270 DEG C, described cycle heat exchange medium enters in pre-cooled heat exchanger assembly by circulating fan and cooling medium input port, activated coke in pre-cooled storehouse is cooled, use pre-cooled storehouse activated coke temperature at 280-330 DEG C, cycle heat exchange medium is heated simultaneously, then heater is entered by cooling medium delivery outlet, cycle heat exchange medium carries out makeup energy by heater, cycle heat exchange medium is heated to 400-450 DEG C and enters heating cabinet again in heater, thus described heating cabinet and described pre-cooled storehouse are by heating heat exchanger assembly, circulating fan, heater and pre-cooled heat exchanger assembly be connected to form a heat circulating system,
Step 4, activated coke after pre-cooled enter carries a nitrogen storehouse, the ammonia nitrogen mist containing 3-5% ammonia is passed into by the import of nitrogen carrier gas body, described mist upwards flows under the effect of regeneration blower fan, in pre-cooled storehouse and regeneration storehouse, nitrogen is carried to activated coke, increase nitrogen-containing functional group in activated coke, ammonia also participates in regenerative response simultaneously;
Step 5, the activated coke of discharging from year nitrogen storehouse enter cooling storehouse, the activated coke medium that is cooled is cooled to 100-150 DEG C, discharges regeneration reactor through discharging bin, adopts nitrogen to purge at discharging bin, make activated coke desorption clean, block entering of oxygen further simultaneously.
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| CN103785367B (en) * | 2014-02-27 | 2016-02-10 | 上海龙净环保科技工程有限公司 | Annular dividing wall type activated coke purification moving bed regenerator and reactive coke regeneration method |
| CN103920540B (en) * | 2014-04-17 | 2015-11-25 | 宁波大学 | The renovation process of SCR denitration and device in a kind of diesel exhaust aftertreatment |
| CN105771946B (en) * | 2016-05-16 | 2019-01-22 | 上海克硫环保科技股份有限公司 | A kind of active coke regeneration system and regeneration method |
| CN106039927B (en) * | 2016-07-13 | 2018-07-24 | 国电科学技术研究院 | The collection device of desorption gas in mobile activated coke bed |
| CN110624525B (en) * | 2018-06-21 | 2022-11-01 | 中国石化工程建设有限公司 | Active coke regeneration system and method |
| CN108745331B (en) * | 2018-07-12 | 2024-02-13 | 中冶长天国际工程有限责任公司 | Novel activated carbon analysis tower and activated carbon analysis process |
| CN108855247A (en) * | 2018-08-09 | 2018-11-23 | 国电环境保护研究院有限公司 | A kind of regeneration method and device of the carbon base catalyst suitable for flue gas purification system |
| CN109499556B (en) * | 2018-10-16 | 2022-08-16 | 中冶长天国际工程有限责任公司 | Anti-scaling activated carbon desorption tower and desorption method thereof |
| CN109174070B (en) * | 2018-10-16 | 2021-08-31 | 中冶长天国际工程有限责任公司 | Activated carbon analysis tower and activated carbon analysis method |
| CN110743519A (en) * | 2019-11-11 | 2020-02-04 | 中国科学院山西煤炭化学研究所 | A kind of desulfurization and denitration activated carbon/carbon-based catalyst regeneration equipment and method |
| CN111569852A (en) * | 2020-06-03 | 2020-08-25 | 中冶焦耐(大连)工程技术有限公司 | An efficient heat transfer activated coke desulfurization, denitration and desorption device |
| CN113651325B (en) * | 2021-08-16 | 2023-12-08 | 宁夏宁疆疆泰炭材料科技有限公司 | Production equipment and process for manufacturing desulfurization and denitrification active coke by multi-stage furnace |
| CN114307522A (en) * | 2022-01-05 | 2022-04-12 | 马鞍山钢铁股份有限公司 | Method for controlling overtemperature of coke oven flue gas active coke desulfurization and denitrification system |
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