CN100372605C - Movable sulfurization active carbon heating regenerator and regeneration - Google Patents
Movable sulfurization active carbon heating regenerator and regeneration Download PDFInfo
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- CN100372605C CN100372605C CNB2006100377836A CN200610037783A CN100372605C CN 100372605 C CN100372605 C CN 100372605C CN B2006100377836 A CNB2006100377836 A CN B2006100377836A CN 200610037783 A CN200610037783 A CN 200610037783A CN 100372605 C CN100372605 C CN 100372605C
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Abstract
The present invention relates to a movable sulfurization active carbon regenerator and a method for regeneration. A regenerator 7 is composed of a feeding section, a transition section, a heating regeneration section, a primary cooling section, a secondary cooling section and an air supply discharge section which are connected in turn from top to bottom, wherein the feeding section is composed of a feeding bin a and a feeding blocking valve b, and the top part of the transition section c is provided with an extraction opening z for regenerating gas. The heating regeneration section is provided with a heating heat exchanger i, the secondary cooling section m is provided with a cooling heat exchanger o, and the air supply discharge section is composed of a conical flow-regulating block s and a conical hopper r which are arranged in a conical hopper r and a spray inlet v for inert gas and a discharge blocking valve t which are arranged at the lower part of the conical flow-regulating block s. The regenerator of the present invention has the advantages of simple structure, small volume, long service life, high regeneration efficiency, economic and safe running, flexible and various heating sources and high heat utilization efficiency.
Description
Technical field
The present invention relates to a kind of air pollution control technique field that belongs to, be specifically related to a kind of reclaim equiment and renovation process that the desulphurized aetivated carbon that loses part or all of activity is regenerated.
Background technology
At present, for solving the problem of China's pollution that caused by coal burning environment and sulphur resource shortage, promote that China sets up conservation-minded society and sustainable economic development, in recent years, the active carbon flue gas desulfurizing technology has obtained greatly developing.This technology adopts active carbon as desulfurizing agent, adsorbs sulfur in smoke, and is stored in the micropore of active carbon with hydration sulfuric acid form.Along with the carrying out of absorption, reaction, the activity of active carbon also reduces gradually, carries out continuously for guaranteeing sweetening process, must be to processings of regenerating of deactivated active carbon, the adsorbate in the activated carbon capillary of regenerating, the activity of recovery active carbon.
Regeneration method of active carbon mainly contains fixed bed washing renovation process and moving bed thermal regeneration method.Fixed bed washing renovation process has shortcomings such as water consumption is big, acid concentration is low, only is applicable to small-scale, low concentration SO
2Flue gas is handled; Moving bed thermal regeneration method has effectively been avoided the shortcoming of fixed bed, and have equipment simple, take up an area of less, advantage such as stable and reliable operation, the rich SO that thermal regeneration produces
2Gas can be produced products such as sulphur, industrial sulphuric acid and sulfur dioxide liquid, and the byproduct path for transformation is wide.
Thermal regeneration requires active carbon to be heated to more than 350 ℃ and keeps a period of time, and the sulfuric acid and the carbon that are adsorbed in the active carbon inner surface are thoroughly reacted, and discharges sulfur dioxide, and active carbon is regenerated simultaneously.Reaction equation is as follows:
H
2SO
4+1/2C→SO
2+1/2CO
2+H
2O (1)
Active carbon thermal regeneration equipment and the renovation process that uses mostly is greatly at present:
1, adopts the vertical tubular type transducer architecture of two joints, be divided into bringing-up section, reative cell and cooling section.Active carbon flows in pipe, and heated air flows outside pipe, conducts heat by tube wall.Arrange reative cell between the vertical tubular type transducer of two joints, active carbon is regenerated at this, and the gas that contains high concentration sulfur dioxide that bears is again also extracted out from here.This kind apparatus structure complexity, equipment volume is big, and maintenance is difficult for; Temperature was very high when the gas that contains high concentration sulfur dioxide that bears again went out reclaim equiment, and the pump-line and the anticorrosion difficulty of blower fan of bleeding are big; The heat that is discharged during the active carbon cooling is not recycled, and energy consumption is big, the operating cost height.
2, adopt the described reclaim equiment of patent ZL02112580.5, heating/refrigerating gas carries out heat exchange by tube wall and active carbon.With the gas cooled pipe that flows in the heat exchanger tube back high temperature active charcoal of regenerating outward; Cooling section outlet high-temperature gas is further sent into the bringing-up section heat activated charcoal after the heating, and it is temperature required to make it reach regeneration; The bringing-up section exit gas imports the cooling section inlet, the cooling active carbon; The gas that contains high concentration sulfur dioxide that bears is again extracted out by air-introduced machine; At the active carbon import and export gas valve for sealing material is set.All less because of The Thermal Capacity of Gaseous and the coefficient of heat transfer, and the bringing-up section exit gas is used to cool off active carbon, and the inevitable requirement gas outlet temperature is very low, and therefore, this kind reclaim equiment requires heat exchange area very big, and equipment volume is huge, and maintenance is difficult for; In addition, the draft of air-introduced machine has limitation, all regeneration gas can't be extracted out, must cause partial regeneration gas to move to cooling section with active carbon, when the oxysulfide in the regeneration gas reaches low-temperature space, can corrode heat-transfer surface, the most of oxysulfide that reaches low-temperature space is simultaneously adsorbed again by active carbon, causes regeneration efficiency to reduce; Equipment life is short, cooling section bottom heat-transfer surface seriously corroded, and the operation maintenance workload is big; If adopt air also to have the local corrosion perforation as recyclegas, leakage air and active carbon burn out the potential safety hazard of reclaim equiment.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, volume is little, the reclaim equiment that the life-span is long, and a kind of regeneration efficiency height, heat utilization ratio height, economical operation safety, simple to operate, renovation process easy to maintenance.
Purpose of the present invention can reach by following measure:
The present invention has designed the reclaim equiment of special construction, and is specific as follows:
A kind of movable sulfurization active carbon heating regenerator, it is characterized in that: reclaim equiment 7 is from top to bottom by feeding section, changeover portion, the thermal regeneration section, the one-level cooling section, the secondary cooling section, the air inlet discharge zone is linked in sequence and forms, feeding section is made of charging warehouse a and charging blocking valve b, changeover portion c top is provided with regeneration gas bleeding point z, the thermal regeneration section is provided with heating heat exchanger i, secondary cooling section m is provided with cooling heat exchanger o, and air inlet discharge zone q transfers stream piece s by the taper that is arranged in the awl bucket r, awl bucket r, being arranged at taper transfers the inert gas entrance v and the discharging blocking valve t of stream piece s bottom to constitute.
Described reclaim equiment 7 steel outer walls are provided with heat-insulation layer.
Cooling heat exchanger o in thermal regeneration section heating heat exchanger i and the secondary cooling section all can adopt tubular heat exchanger, flat board or corrugated plating heat exchanger, by heat exchange wall and active carbon indirect heat exchange, heating heat exchanger i and cooling heat exchanger o all can be assembled by one or more standard heat exchangers.
The outer wall of one-level cooling section j adopts reinforced beam k inner lining refractory block 1.
Described cooling heat exchanger o bottom is provided with water inlet w, and cooling heat exchanger o top is provided with overfall x, and the top sets out steam ports n.
The mobile regenerated equipment of desulphurized aetivated carbon carries out the renovation process of active carbon regeneration, it is characterized in that comprising the steps:
A: active carbon 17 joins in the reclaim equiment by feeding section continuously;
B: normal temperature air is warming up to more than 400 ℃ by hot flue gas generation system, imports reclaim equiment 7 warming and aeration device i and active carbon 17 by heat exchange tube wall countercurrent flow;
C: the regeneration gas of generation and hot flue gas 4 are heated to active carbon 17 more than 350 ℃, and regenerative response takes place, and discharge SO
2
D: inert gas 10 and cooling water 12 enter in the reclaim equiment 7 cooling active carbon 17 from bottom to top by inert gas supply system, chilled(cooling) water supply (CWS) system respectively, and inert gas 10 and water vapor purging active carbon regenerative response produce is rich in SO
2The heat of high temperature active charcoal after gas and the reclaiming;
E: regeneration gas 15 utilizes after extracting by the regeneration gas extraction system again.
F: regeneration, cooled active carbon 8 recycle after discharging reclaim equiment by discharging blocking valve t.
Described hot flue gas produces system and is made of air-blaster 1, air preheater 5 and hot-blast stove 6, and fuel 3 burns in hot-blast stove 6 and produces hot flue gas 4.
Described chilled(cooling) water supply (CWS) system adopts cooling water 12 cooling active carbons, with water pump 11 cooling water 12 is conveyed into water inlet w among the reclaim equiment cooling heat exchanger o by tank 13, the cooling water 12 of heating evaporation enters active carbon layer in the reclaim equiment 7 from cooling heat exchanger o top venthole n, too much cooling water 12 flows back to tank 13 by overfall x, and tank 13 water levels are lower than cooling heat exchanger o top overfall x height.
Described inert gas 10 can adopt nitrogen, carbon dioxide or regeneration gas to purify, reclaim SO
2The gaseous mixture of one or more of the tail gas that discharge the back.
Described regeneration gas 15 refer to that the regeneration gas bleeding point z by changeover portion c top extracts out by inert gas 10, water vapour and active carbon regeneration the time produce be rich in SO
2The gaseous mixture of gas.
Charging lock device valve is identical with outlet discharging blocking valve function, all plays the effect of envelope gas, blanking, and active carbon is not had shearing force, can not cause the activated carbon granule fragmentation.According to actual conditions, a reclaim equiment can be provided with a plurality of import and exports.Changeover portion is characterised in that active carbon is piled into one or more material awl naturally at this section, make active carbon be implemented in uniform distribution on the following cross section of reclaim equiment changeover portion, naturally the material awl changeover portion space, top that forms is as the gas collection space, the changeover portion top is provided with bleeding point z, and gas is extracted out by this place in the reclaim equiment.The gas collection space is bigger, is equivalent to an expansion chamber, and most of dust guarantees that in this sedimentation exhaust tube does not have blockage problem in the air-flow.One-level cooling section outer wall adopts armored concrete to add the refractory brick masonry construction, and reinforced beam separates reclaim equiment thermal regeneration section and secondary cooling section, eliminates upper and lower two parts regeneration steel wall heat conduction problem.The one-level cooling section is a hole capital after selling all securities, does not have other inner member.Heating heat exchanger is hot flue gas and active carbon indirect heat exchanger, can adopt tubular heat exchanger, flat board or corrugated plating heat exchanger, and heating heat exchanger and cooling heat exchanger all can be assembled by one or more standard heat exchangers.The secondary cooling section is a water cooling heat exchanger, and the top of heating heat exchanger is provided with several ventholes, makes the water vapour of vaporization can enter active carbon layer, and heating heat exchanger top is provided with overfall.Taper transfer the stream piece be arranged in the blanking awl bucket with blanking awl square sheet of paper used for painting or calligraphy to opposite inner member, play and adjust that active carbon flows in the reclaim equiment, the purpose that the realization active carbon layer flows downward with essentially identical speed integral body.Simultaneously, the inert gas entrance is arranged on taper and transfers under the awl of stream piece in the space, and therefore, taper transfers the stream piece also to play the inert gas equally distributed effect on the reclaim equiment cross section that makes.
Adopt the reclaim equiment of said structure, the present invention carries out active carbon regeneration according to following renovation process: the regeneration technology that adopts reclaim equiment of the present invention, hot flue gas to produce system, chilled(cooling) water supply (CWS) system, inert gas supply system and regeneration gas extraction system formation is carried out thermal regeneration to deactivated desulphurized aetivated carbon.Hot flue gas produces system and is made up of blower fan, air preheater and hot-blast stove; The chilled(cooling) water supply (CWS) system is made of water pump and tank, and the tank water level is lower than heat exchanger top overfall height.Inert gas can adopt nitrogen, carbon dioxide or regeneration gas to purify, reclaim SO
2The gaseous mixture of one or more of the tail gas that discharge the back is conveyed into reclaim equiment by extension set or compressor.Regeneration gas is extracted out by the bleeding point at reclaim equiment changeover portion top by air-introduced machine, sends into byproduct production workshop section.
The active carbon that needs in the charging warehouse to regenerate adds reclaim equiment continuously by the charging blocking valve, and active carbon slowly moves downwards by self gravitation in reclaim equiment.At the reclaim equiment changeover portion, active carbon is tentatively heated by the regeneration gas of reverse flow, and the while regeneration gas is cooled, preliminary sedimentation dedusting, and regeneration gas utilizes after being extracted out by the regeneration gas air-introduced machine more afterwards.Active carbon continues to flow into the thermal regeneration section downwards.In the thermal regeneration section, high-temperature flue gas and active carbon carry out heat exchange by heating heat exchange wall.Warm flue gas feeds an air preheater in the heat exchanger exit, and the normal temperature air of sending with air blast carries out heat exchange.Whether up to standard according to sulfur dioxide in flue gas content, determine to be entered desulfurization regeneration equipment entrance or exhaust pass by the air cooled smoke.The air of warm flue gas heating imports hot-blast stove in the quilt, with the fuel mix burning, further is warming up to more than 400 ℃, and this high-temperature flue gas is sent into reclaim equiment thermal regeneration section exchanger heat gas approach, is used for heat activated charcoal.Fuel can be coal, oil, natural gas, coal gas, blast furnace gas, combustiblerefuse etc.
Active carbon from up to down passes in the flow process of thermal regeneration section, progressively is heated to more than 350 ℃, and regenerative response takes place.That bears is rich in SO again
2Gas upwards flows into changeover portion under bottom-up mobile inert gas and water vapor purging effect, carry out direct contact heat-exchanging with this place's active carbon.
The active carbon that flows into the one-level cooling section has obtained regeneration, but temperature is higher, can not directly discharge reclaim equiment, needs its cooling.With the water vapour and inert gas and the direct contact heat-exchanging of high temperature active charcoal that upwards flow, active carbon is tentatively cooled off earlier, and water vapour and inert gas are heated.The heat that water vapour and inert gas swap out is brought into reclaim equiment top and is used for heat activated charcoal, thereby realizes heat recovery and utilization.In addition, between activated carbon granule the inert gas of reverse flow, water vapour and bear again be rich in SO
2Gas helps to improve the coefficient of heat transfer of heating heat exchanger.
Active carbon continues to flow into the secondary cooling section downwards, and at this, active carbon and water carry out further heat exchange cooling.Meanwhile, water is heated, evaporates, and the water vapour of evaporation sprays into active carbon layer through cooler top venthole.Too much water can flow back to tank by overfall in the cooler.Active carbon after the water-cooled flows downward, and with the inert gas contact heat-exchanging, active carbon finally is cooled to about 100 ℃ again.
Stream piece and reclaiming cone bucket are transferred in the taper of flowing through downwards of regeneration, cooled active carbon, recycle after discharging reclaim equiment by the discharging blocking valve, finish regenerative operation.
Beneficial effect of the present invention:
Reclaim equiment of the present invention is simple in structure, volume is little, and the life-span is long; The heating thermal source is versatile and flexible, Btu utilization efficient height; Regeneration efficiency height, economical operation safety; Simple to operate, easy to maintenance.Details are as follows:
1, reclaim equiment is simple in structure, volume is little, and the life-span is long.Except that thermal regeneration section, secondary cooling section and blanking awl, other space of reclaim equiment does not all have inner member.Reclaim equiment thermal regeneration section heating heat exchanger of the present invention and secondary cooling section cooling heat exchanger all adopt tubular heat exchanger simple in structure, flat board or corrugated plating heat exchanger.Adopt water-cooling pattern, the coefficient of heat transfer of water is than big many of the coefficient of heat transfer of air; In addition, with heat-transfer surface that active carbon contacts on weld fin, the fin of active carbon side and the air-flow of reverse flow all help to improve the coefficient of heat transfer.Therefore, under the identical situation of power of regeneration, the volume of reclaim equiment is less.Changeover portion is equivalent to the active carbon preheating section, with high temperature regeneration gas and active carbon Direct Contact Heating active carbon, does not have the heat exchange wall, does not more have etching problem; The secondary cooling section is because of there being the inert gas purge of reverse flow, and the active carbon side group does not originally have SO
2And SO
3There is not the acid dew piont corrosion problem in gas yet.Therefore, the reclaim equiment corrosion is slight, and preservative treatment is easy, long service life.
2, the heating thermal source is versatile and flexible, Btu utilization efficient height.According to the local energy resources situation, hot flue gas can be produced by burnings such as fire coal, oil, natural gas, coal gas, blast furnace gas, combustiblerefuses.Air preheater of configuration is used for warm flue gas and air heat exchange before the hot-blast stove, and the Btu utilization efficient of hot-blast stove is reached more than 80%.
3, regeneration efficiency height, economical operation safety.What produce during regeneration in the reclaim equiment is rich in SO
2Gas is in time blown out by water vapour and inert gas, helps the carrying out of regenerative response; Be rich in SO under water vapour and the inert gas purge effect
2Gas can not flow into reclaim equiment one-level cooling section zone, eliminates regeneration back active carbon and adsorbs SO once more
2Possibility; In addition, transfer under the effect of stream piece at changeover portion and taper, air-flow, charcoal stream and heat flux distribution are even in the active carbon flowing velocity basically identical in the reclaim equiment, reclaim equiment, and no dead band exists, regenerative response degree basically identical on the same cross section of regeneration zone.Therefore, in sum, will obtain very high regeneration efficiency.Economical operation, economic operating cost are embodied in 1. thermal regeneration section Btu utilization efficient height; 2. the water vapour and the inert gas part heat that the high temperature active charcoal is contained of reverse flow is carried into thermal regeneration section and changeover portion in the reclaim equiment, is used for heat activated charcoal, realizes that heat is recycling; 3. the mechanical seal of reclaim equiment charging and discharging valve is good, the oxygen that bleeds seldom, the charcoal loss that the reaction of charcoal and oxygen causes is also seldom; 4. reclaim equiment thermal regeneration section and secondary cooling section steel wall are separated by one-level cooling section concrete wall, eliminate thermal regeneration section and secondary cooling section wall heat conduction problem, and in addition, reclaim equiment steel wall is provided with heat-insulation layer outward, and thermal loss is dropped to minimum.This renovation process adopts water as cooling medium, local leakage did not cause burning out the potential safety hazard of reclaim equiment when the air cooling can not take place, even the local water that takes place leaks, the water heat absorption evaporation that only can leak causes the leakage region temperature to reduce, can not destroy reclaim equiment, more not have safety problem.
4, simple to operate, easy to maintenance.Renovation process regeneration gas of the present invention has carried out the sedimentation dedusting at the reclaim equiment changeover portion, so the regeneration gas extraction tube does not have blockage problem.Related moving equipment blower fan, water pump, hot-blast stove and blanking blocking valve are routine, mature equipment, and be simple to operate, and control easily, and is easy to maintenance, and general enterprise all possesses the operation and maintenance ability.The main inner member of reclaim equiment---heating heat exchanger and cooling heat exchanger all adopts one or more standard heat exchanger splicing structure, convenient disassembly, and maintenance is easily.
Description of drawings
Fig. 1 is a renovation process system flow chart of the present invention.
Fig. 2 is a reclaim equiment structural representation of the present invention.
Fig. 3 is Fig. 2 I-I vertical view.
Fig. 4 is Fig. 2 II-II vertical view.
Fig. 5 is Fig. 2 III-III vertical view.
Fig. 6 is Fig. 2 IV-IV vertical view.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Can find out clearly that by Fig. 1 the desulphurizing activated carbon regeneration method of moving bed that the present invention designs is made of following equipment: air-blaster 1, air preheater 5, hot-blast stove 6, reclaim equiment 7, inert gas blower 9, water pump 11, tank 13 and regeneration gas extract air-introduced machine 16 and form.Air preheater 5 is a tubular heat exchanger, and the optional usefulness of material has examining of better acidproof dew point corrosion and steps on steel or NI steel, and heat exchanger tube outer wall welding spiral fin is strengthened heat exchange, and heat-transfer surface adopts mopping anticorrosion.Based on fuel form (solid, liquid or gas) is selected different hot-blast stove 6 for use.Regeneration gas extracts air-introduced machine 16 and selects the heatproof blower fan for use, and material is selected corrosion-resistant steel grades such as 316L for use.The air line that regeneration gas extraction pipeline, supplied flue gases pipeline and air preheater 5 are exported to 6 in hot-blast stove all is provided with heat-insulation layer.
As seen from Figure 2, reclaim equiment of the present invention transfers stream piece s and discharging blocking valve t to constitute by charging warehouse a, charging blocking valve b, changeover portion c, heating heat exchanger i, reinforced beam k, refractory brick 1, cooling heat exchanger o, awl bucket r, taper.Heating heat exchanger i heat-transfer surface adopts corrosion resistant stainless steel to make, and other steel construction piece all adopts cheap ordinary carbon steel manufacturing.Anti-corrosion measure processing such as thermal spraying aluminum are carried out on the carbon-steel parts surface that contacts with activated carbon, and it is anticorrosion that the steel surface that contacts with flue gas, water and air carries out mopping.Reinforced beam soil k selects the heatproof concrete for use, and refractory brick 1 adopts acid-resistant refractory brick to build by laying bricks or stones.The steel outer wall is provided with heat-insulation layer y.Charging lock device valve b and outlet discharging blocking valve t adopt star-like blanking device.
The rectangular tube heat exchanger that present embodiment heating heat exchanger i adopts equilateral triangle to arrange, its sectional view is seen Fig. 3, rectangular tube f adopts seamless square tube, stream active carbon in the pipe, the hot flue gas of stream between pipe.Fume side is provided with several deflection plates g, advances flue gas mouth h following, and smoke gas port e is last, with the active carbon countercurrent flow.Two high temperature are set advance flue gas mouth h and middle temperature smoke gas port e (Fig. 3), and correspondence is provided with two taper converging transition e0, e1 and taper divergent segment h0, h1.One group of taper divergent segment h0, heat exchange unit i0 and converging transition e0 constitute one group of standard heat exchanger.Heating heat exchanger i constitutes h0, i0, e0 and h1, i1, e1 by two standard heat exchangers, and is easy to maintenance, and flue gas flow velocity on perpendicular to the cross section of flow direction is evenly distributed.
Present embodiment cooling heat exchanger o adopts plate-type exchanger, and several floors of welding p0 constitutes one group of heat-exchanging component between two big heat exchange flat boards.Active carbon flows in the heat-exchanging component internal cavity, and cooling water flows from the cavity between the heat-exchanging component.Whole heat exchanger bottom is provided with a water inlet w, and top is provided with an overfall x.Between heat exchanger top, two groups of heat-exchanging components several ventholes n is set, venthole n cutaway view is seen Fig. 6.By shown in Figure 6, venthole n is made of awl cap n0, standpipe n1 and welding and awl cap n0 and three support bar n2 between standpipe n1, and the slit of boring between cap n0 and standpipe n1 allows that water vapour passes through, but active carbon can't be walked around and bores cap n0 and enter standpipe n1.
Taper rectifying block s vertical view in the awl bucket r is seen Fig. 5, is two groups of orthogonal " V " shape member s0 of falling, s1 is overlapping is welded.Taper transfers stream piece s lower space to arrange inert gas puff prot v.
Utilize this patent invention reclaim equiment, adopt following renovation process to carry out active carbon regeneration:
Need the active carbon 17 of regeneration to add reclaim equiment 7 charging warehouse a, b adds in the reclaim equiment continuously by charging lock device valve, and active carbon slowly moves downwards by self gravitation in reclaim equiment.At reclaim equiment changeover portion c, active carbon 17 is tentatively heated by the regeneration gas 15 of reverse flow, and while regeneration gas 15 is cooled, preliminary sedimentation dedusting, and regeneration gas 15 is extracted by regeneration gas and utilizes after air-introduced machine 16 is extracted out again afterwards.Active carbon 17 continues slowly to flow into thermal regeneration section d downwards, at this active carbon 17 and hot flue gas 4 by heat exchange tube wall countercurrent flow.Active carbon is heated to more than 350 ℃, and regenerative response takes place.
Hot flue gas generation systems is as follows: air-blaster 1 outlet normal temperature air 2 is sent into air preheater 5 cryogenic medias inlet by pipeline, normal temperature air is through sending into hot-blast stove 6 after the warm flue gas heating in air preheater 5 quilts, produce hot flue gas 4 more than 400 ℃ at this and fuel 3 mixed combustions, hot flue gas 4 imports reclaim equiment heating heat exchanger i and advances flue gas mouth h and active carbon heat exchange, middle temperature flue gas after the heat exchange is discharged by heating heat exchanger smoke gas port e, import air preheater 5 thermal mediums inlet again, most of waste heat is given normal temperature air.SO in the flue gas
2Content is if be lower than discharge standard, and the flue gas after then will lowering the temperature is sent into desulfurization regeneration equipment and exported clean flue and discharge with boiler smoke, otherwise, send into the former flue of desulfurization regeneration equipment entrance, discharge after the desulfurization.
Present embodiment adopts water vapour and the interior high temperature active charcoals of inert gas 10 preliminary cooling one-level cooling section j that spray into, and afterwards, with cooling water 12 further cooling active carbons, the active carbon after the water-cooled cools off with inert gas 10 more again.The water vapour of evaporation and the inert gas 10 and the direct heat transfer of high temperature active charcoal that spray into reclaim the entrained heat of high temperature active charcoal when adopting the cooling of one-level cooling section, are used to heat the upper strata active carbon, improve the economy of regenerative process.Soft water 14 is taken from the boiler water softening system or the little water softening system of a cover, self-supporting soft water 14 is set.With water pump 11 soft water in the tank 13 is sent into the water inlet w of reclaim equiment cooling heat exchanger o, water carries out heat exchange at the cooling heat exchanger o of reclaim equiment 7 by heat exchange wall and high temperature active charcoal 17, and active carbon 17 is cooled, and water is heated, evaporates.The water vapour of evaporation sprays into active carbon layer by cooling heat exchanger o top several steam ventholes n.Water level is lower than the height of cooling heat exchanger o top overfall x in the tank 13, and too much water flows back to tank 13 by overfall x in the cooler o.
Stream piece s is transferred in the taper of flowing through of cooled active carbon 8, recycles after discharging reclaim equiment 7 by discharging blocking valve t again, finishes whole regenerative process.
Claims (6)
1. movable sulfurization active carbon heating regenerator, it is characterized in that: reclaim equiment (7) is from top to bottom by feeding section, changeover portion, the thermal regeneration section, the one-level cooling section, the secondary cooling section, the air inlet discharge zone is linked in sequence and forms, feeding section is made of charging warehouse (a) and charging blocking valve (b), changeover portion (c) top is provided with regeneration gas bleeding point (z), the thermal regeneration section is provided with heating heat exchanger (i), one-level cooling section (j) is a hole capital after selling all securities, there is not other inner member, its outer wall adopts reinforced beam (k) inner lining refractory block (l), secondary cooling section (m) is provided with cooling heat exchanger (o), the bottom of cooling heat exchanger (o) is provided with water inlet (w), top is provided with overfall (x), the top sets out steam ports (n), and air inlet discharge zone (q) is transferred stream piece (s) by the taper that is arranged in the awl bucket (r), awl bucket (r), being arranged at taper transfers the inert gas entrance of stream piece (s) bottom (v) to reach discharging blocking valve (t) formation.
2. movable sulfurization active carbon heating regenerator according to claim 1 is characterized in that: described reclaim equiment (7) steel outer wall is provided with heat-insulation layer.
3. a renovation process that utilizes the mobile regenerated equipment of the described desulphurized aetivated carbon of claim 1 to carry out active carbon regeneration is characterized in that comprising the steps:
A: active carbon (17) joins in the reclaim equiment (7) continuously by feeding section;
B: normal temperature air is warming up to more than 400 ℃ by hot flue gas generation system, and the warming and aeration device (i) that imports reclaim equiment (7) and active carbon (17) are by heat exchange tube wall countercurrent flow;
C: the regeneration gas of generation and hot flue gas (4) are heated to active carbon (17) more than 350 ℃, and regenerative response takes place, and discharge SO
2
D: inert gas (10) and cooling water (12) enter cooling active carbon in the reclaim equiment (7) from bottom to top by inert gas supply system, chilled(cooling) water supply (CWS) system respectively, and inert gas and water vapor purging active carbon regenerative response produce is rich in SO
2The heat of high temperature active charcoal after gas and the reclaiming;
E: regeneration gas (15) utilizes after extracting by the regeneration gas extraction system again;
F: regeneration, cooled active carbon (8) recycle after discharging reclaim equiment (7) by discharging blocking valve (t); Wherein said regeneration gas (15) be by the regeneration gas bleeding point (z) at changeover portion (c) top extract out by inert gas (10), water vapour and active carbon regeneration the time produce be rich in SO
2The gaseous mixture of gas composition.
4. renovation process according to claim 3 is characterized in that described hot flue gas produces system and is made of air-blaster (1), air preheater (5) and hot-blast stove (6), and fuel (3) is at hot-blast stove 6) in the generation hot flue gas (4) that burns.
5. renovation process according to claim 3, it is characterized in that described chilled(cooling) water supply (CWS) system's employing cooling water (12) cooling active carbon, cooling water (12) is conveyed into the water inlet (w) of reclaim equiment cooling heat exchanger with water pump (11) by tank (13), the cooling water (12) that is heated evaporation in the cooling heat exchanger (o) enters active carbon layer in the reclaim equiment from cooling heat exchanger top venthole (n), too much cooling water (12) flows back to tank (13) by overfall (x), and tank (13) water level is lower than cooling heat exchanger (o) top overfall (x) highly.
6. renovation process according to claim 3 is characterized in that described inert gas (10) adopts nitrogen, carbon dioxide or regeneration gas through purifying, reclaim SO
2The gas of more than one of the tail gas that discharge the back.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100377836A CN100372605C (en) | 2006-01-16 | 2006-01-16 | Movable sulfurization active carbon heating regenerator and regeneration |
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| CNB2006100377836A CN100372605C (en) | 2006-01-16 | 2006-01-16 | Movable sulfurization active carbon heating regenerator and regeneration |
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|---|---|---|---|---|
| CN102794163A (en) * | 2011-05-24 | 2012-11-28 | 沈善明 | Thermal regeneration furnace for waste powdered activated carbon |
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| CN110743519A (en) * | 2019-11-11 | 2020-02-04 | 中国科学院山西煤炭化学研究所 | Desulfurization and denitrification activated carbon/carbon-based catalyst regeneration equipment and method |
| CN114904501A (en) * | 2022-05-06 | 2022-08-16 | 陕西延长石油（集团）有限责任公司 | Device and method for quickly regenerating activated carbon |
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