CN202087196U - High-efficiency energy-saving purification system for industrial volatile organic pollutants - Google Patents

High-efficiency energy-saving purification system for industrial volatile organic pollutants Download PDF

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Publication number
CN202087196U
CN202087196U CN2011200817423U CN201120081742U CN202087196U CN 202087196 U CN202087196 U CN 202087196U CN 2011200817423 U CN2011200817423 U CN 2011200817423U CN 201120081742 U CN201120081742 U CN 201120081742U CN 202087196 U CN202087196 U CN 202087196U
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bed
air
catalytic
heat exchanger
hollow
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CN2011200817423U
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朱殿兴
刘光明
冯炘
刘宗瑜
周艳
岳俊杰
李玲
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Tianjin University of Technology
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Tianjin University of Technology
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Abstract

The utility model relates to a high-efficiency energy-saving purification system for industrial volatile organic pollutants, which is characterized in that firstly, a hollow activated carbon partition and hollow side walls of an absorption bed are communicated with each other, and the two hollow side walls are provided with a hot air inlet and a hot air outlet respectively; secondly, a catalytic combustion bed is connected with a plate heat exchanger, and the plate heat exchanger is connected with the hot air inlet on the hollow side wall of the absorption bed through a heating fan of the absorption bed. The high-efficiency energy-saving purification system is simple and reasonable in system structure, energy consumption can be reduced effectively, purification rate can be increased, service life of catalyst can be prolonged, desorption flow time can be shortened, purification efficiency can be improved, operation cost can be reduced, and the high-efficiency purification system is safe and reliable.

Description

The energy-efficient cleaning system of the volatilizable organic pollution of industry
Technical field
The utility model belongs to organic pollution cleaning system field, the energy-efficient cleaning system of the volatilizable organic pollution of especially a kind of industry.
Background technology
Use cleaning system that adsorption system and desorption catalyzing combustion system constitute jointly in the prior art and realize that improvement to the industrial volatilizable organic pollution of large-wind-volume low-concentration, its primary structure comprise desorption electric heater, catalytic combustion bed, mixed flow heat exchanger, the desorption circulating fan in filter, spark arrester, adsorbent bed, absorption main air blower and the desorption catalyzing combustion system in the adsorption system.Filter in the adsorption system, spark arrester, adsorbent bed and absorption main air blower connect successively by pipeline, realization is to the volatilizable organic pollutant adsorption of large-wind-volume low-concentration industry, after adsorbent in the adsorbent bed reaches capacity, pass through valve event, adsorbent bed is switched to the desorption catalyzing combustion system, the desorption circulating fan is introduced mixed flow heat exchanger and desorption electric heater with air successively by pipeline, enter adsorbent bed through the air after heating up and realize desorption, waste gas behind the desorption delivers into the catalytic combustion bed and carries out catalytic combustion generation cleaning gas up to standard, a part of cleaning gas up to standard enters atmosphere, and another part cleans gas up to standard and enters the mixed flow heat exchanger heat energy is provided.Though this existing system can be realized the processing of the volatilizable organic pollution of large-wind-volume low-concentration industry, but there are the following problems: 1. because will be to adsorbent in entering adsorbent bed by the air after the intensification of desorption electric heater, adsorbate and adsorbent bed metal structure heat simultaneously, the adsorbent bed metal structure just consumes partial heat energy like this, thereby prolonged desorption time, reduced desorption efficient, especially northerly winter, heat-energy losses is bigger, desorption time is longer, and the waste heat that catalytic combustion produces is not fully utilized also can increase the weight of thermal pollution to atmospheric environment; 2. when the heat energy of the cleaning high-temperature gas up to standard that utilizes the catalytic combustion bed to discharge, owing to adopt the mixed flow heat exchange mode, the existence of high-temperature catalytic tail gas has reduced the partial pressure of oxygen of mist, the active oxygen that participates in catalytic reaction is reduced, catalyst activity reduces, thereby have influence on the continuous stability of catalytic oxidation and reacting completely property, purifying rate reduction, electrical heating energy consumption are increased; 3. the purifying rate of catalytic combustion bed is lower, catalyst is short service life, trace it to its cause for: industrial volatilizable organic pollution is to enter catalytic combustion bed of the prior art from the below, discharge from the top, the catalytic combustion that lower floor takes place produces heat effect to the catalytic bed on upper strata, thereby whole catalytic bed upper area surpasses the operating temperature of its permission easily because of the heat energy savings, and catalyst is lost activity, cause purifying rate to reduce, catalyst shortening in service life; Industrial in addition volatilizable organic pollution catalyticing combustion process free convection direction is bottom-up operation, and during through the catalytic combustion bed, waste gas begins to quicken to rise, and causes reduce the time of contact of waste gas and catalytic combustion bed, causes purifying rate to reduce.Three aspect reasons cause that whole cleaning system energy consumption height of the prior art, purifying rate are low in sum, catalyst shortens service life, the desorption flow process time is long, purification efficiency is lower, and operating cost is higher.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of and can effectively cut down the consumption of energy, improve purifying rate, prolong catalyst service life, shorten the desorption flow process time, improve purification efficiency, reduce the energy-efficient cleaning system of industrial volatilizable organic pollution of operating cost.
The utility model solves its technical problem and is achieved through the following technical solutions:
The energy-efficient cleaning system of the volatilizable organic pollution of a kind of industry, comprise filter, first spark arrester, adsorbent bed, absorption main air blower, catalytic combustion bed, mixed flow heat exchanger, desorption electric heater and desorption circulating fan, filter, spark arrester, adsorbent bed and absorption main air blower connect successively by pipeline, catalytic combustion bed first air outlet connects mixed flow heat exchanger first air inlet by pipeline, mixed flow heat exchanger air outlet connects the desorption circulating fan by desorption electric heater and adsorbent bed, and its innovative point is:
(1), adsorbent bed comprises the air intake expansion mouth, active-carbon bed body and air-out choke, the two sides that active-carbon bed body is relative connects air intake expansion mouth and air-out choke respectively, on the air intake expansion mouth, be fixed with air distribution plate, multilayer active carbon dividing plate is set in the active-carbon bed body, wherein active-carbon bed body two lateral walls all is set to have the sidewall of hollow structure, the active carbon dividing plate is set to have the active carbon dividing plate of hollow structure, active carbon dividing plate with hollow structure is communicated with the sidewall with hollow structure, has on the two side of hollow structure to be respectively arranged with hot blast import and hot-blast outlet;
(2), catalytic combustion bed second air outlet connects the thermal source wind inlet of a plate type heat exchanger by pipeline, the first thermal source wind outlet of this plate type heat exchanger connects the sidewall hot blast import that adsorbent bed has hollow structure by an adsorbent bed heating blower;
(3), this plate type heat exchanger is provided with first gas feed to be heated, first gas vent to be heated, second gas feed to be heated and second gas vent to be heated, wherein first gas vent to be heated connects mixed flow heat exchanger second air inlet by pipeline, second gas feed to be heated connects the outlet of desorption circulating fan, and second gas vent to be heated connects catalytic combustion bed air inlet.
And, described catalytic combustion bed comprises catalytic bed body, air inlet, air outlet, catalysis electric heater, air distribution plate and catalytic bed, its catalytic bed body upper end is shaped on air inlet, catalytic bed body lower end is shaped on air outlet, be disposed with catalysis electric heater, air distribution plate and catalytic bed in the catalytic bed body from top to bottom, the external wall of this catalytic bed installs the pyroceram fibre heat-insulation layer.
And described catalytic bed comprises catalyst carrier and catalyst, and catalyst carrier is a honeycomb ceramic body, and catalyst is alundum (Al and Bo, Palladium.
And, described at plate type heat exchanger second gas vent to be heated and catalytic combustion bed air inlet between install one second spark arrester additional.
Advantage of the present utility model and beneficial effect are:
1, the adsorbent bed of this cleaning system comprises the air intake expansion mouth, active-carbon bed body and air-out choke, the two sides that active-carbon bed body is relative connects air intake expansion mouth and air-out choke respectively, on the air intake expansion mouth, be fixed with air distribution plate, multilayer active carbon dividing plate is set in the active-carbon bed body, wherein active-carbon bed body two lateral walls all is set to have the sidewall of hollow structure, the active carbon dividing plate is set to have the active carbon dividing plate of hollow structure, active carbon dividing plate with hollow structure is communicated with the sidewall with hollow structure, have on the two side of hollow structure and be respectively arranged with hot blast import and hot-blast outlet, catalytic combustion bed second air outlet connects the hot blast import of a plate type heat exchanger by pipeline, and first hot-blast outlet of this plate type heat exchanger connects the hot blast import that adsorbent bed has the hollow structure sidewall by an adsorbent bed heating blower; The hot blast import of this kind structure connects the outlet of catalytic bed tail gas, desorption process utilizes the hardware of catalysis tail gas heating adsorbent bed inside and passes through interior adsorbent and the adsorbate of conduction convection type indirect adsorbent bed, thereby significantly shortened desorption time, reduced power consumption, made full use of the heat energy that catalyticing combustion process produces, environmental protection, and greatly reduce equipment operating cost, improved exhaust-gas treatment efficient, and can effectively solve low at the northern area winter temperature, desorption prolongs heat time heating time, and power consumption increases, even the technical barrier that the desorption flow process can not normally be moved.
2, this cleaning system adopts plate type heat exchanger, it is provided with first gas feed to be heated, first gas vent to be heated, second gas feed to be heated and second gas vent to be heated, wherein first gas vent to be heated connects mixed flow heat exchanger second air inlet by pipeline, second gas feed to be heated connects the outlet of desorption circulating fan, and second gas vent to be heated connects catalytic combustion bed air inlet; This structure can effectively be carried out heat exchange to Cryogenic air, make Cryogenic air reach desorption temperature, and improved oxygen content in the VOCs gas that enters catalytic bed, and improved catalytic combustion purifying rate and desorption efficient, reduced thermal pollution when having made full use of catalytic combustion thermal energy to environment.
3, the catalytic combustion bed of this cleaning system comprises the catalytic bed body, air inlet, air outlet, the catalysis electric heater, air distribution plate and catalytic bed, its catalytic bed body upper end is shaped on air inlet, catalytic bed body lower end is shaped on air outlet, be disposed with the catalysis electric heater in the catalytic bed body from top to bottom, air distribution plate and catalytic bed, the external wall of this catalytic bed installs the pyroceram fibre heat-insulation layer, this structure has effectively improved the time of contact of waste gas and catalytic bed, avoided the overheated of catalytic bed top, make temperature equalization between each catalytic bed, improved the catalytic purification rate, and the pyroceram fibre of the external wall of catalytic bed can effectively reduce heat energy loss, raising catalytic combustion efficient and self-sustaining burning stability.
4, this cleaning system installs one second spark arrester additional between second gas vent to be heated of plate type heat exchanger and catalytic combustion bed air inlet, has increased the security and the reliability of system, prevents the generation of contingency.
5, the utility model system architecture advantages of simple, can effectively cut down the consumption of energy, improve purifying rate, prolong catalyst service life, shorten the desorption flow process time, improve purification efficiency, reducing operating cost, is a kind of safe and reliable energy-efficient cleaning system of industrial volatilizable organic pollution.
Description of drawings
Fig. 1 is a process flow diagram of the present utility model;
Fig. 2 is the structural representation of the utility model adsorbent bed;
Fig. 3 is the right view (omitting air-out choke and Alveolate activated carbon capable) of Fig. 2;
Fig. 4 is the vertical view of Fig. 2;
Fig. 5 is the structural representation of the utility model catalytic combustion bed;
Fig. 6 is the vertical view of Fig. 5.
The specific embodiment
The utility model is described in further detail below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
The energy-efficient cleaning system of the volatilizable organic pollution of a kind of industry, comprise filter, first spark arrester, adsorbent bed, absorption main air blower, catalytic combustion bed, mixed flow heat exchanger, desorption electric heater and desorption circulating fan, filter, spark arrester, adsorbent bed and absorption main air blower connect successively by pipeline, catalytic combustion bed first air outlet connects mixed flow heat exchanger first air inlet by pipeline, mixed flow heat exchanger air outlet connects the desorption circulating fan by desorption electric heater and adsorbent bed, and its innovative point is:
(1), adsorbent bed comprises air intake expansion mouth 12, active-carbon bed body 5 and air-out choke 6, the small-caliber end of air intake expansion mouth connects blast pipe 1, this blast pipe can connect first spark arrester and desorption electric heater respectively by threeway and valve, the small-caliber end of air-out choke connects discharge pipe 7, this discharge pipe can connect absorption main air blower and desorption circulating fan, air-out choke bottom offers manhole 8, this manhole is equipped with the door that reloads, active-carbon bed body top offers explosion-proof relief mouth 3, the two sides that active-carbon bed body is relative connects air intake expansion mouth and air-out choke respectively, on the air intake expansion mouth, be fixed with air distribution plate 11, this air distribution plate can be arranged according to the actual condition at scene, it mainly is evenly to guide the waste gas that contains industrial volatilizable organic pollution on the active carbon dividing plate active carbon, multilayer active carbon dividing plate is set in the active-carbon bed body, place Alveolate activated carbon capable 10 on this active carbon dividing plate, the uniform thermometric thermal resistance connector 14 that is provided with on the active-carbon bed body sidewall, be used to connect thermal resistance, thereby each temperature data of very first time monitoring adsorbent bed, it is that the steel pipe of rectangle is as support that four jiaos of active-carbon bed bodies adopt the cross section, the moulding of convenient active-carbon bed body, for the connection of follow-up structure is laid a solid foundation, active-carbon bed body two lateral walls all is set to have the sidewall 13 of hollow structure, the active carbon dividing plate is set to have the active carbon dividing plate 9 of hollow structure, active carbon dividing plate with hollow structure is communicated with the sidewall with hollow structure, have on the two side of hollow structure and be respectively arranged with hot blast import 2 and hot-blast outlet 4, the active carbon dividing plate with hollow structure after the connection and the sidewall with hollow structure can reach hot blast and enter in the active carbon dividing plate with hollow structure and sidewall with hollow structure back of flowing from the hot blast import and discharge this hot blast import from hot-blast outlet, hot-blast outlet, the sidewall structures that has the active carbon dividing plate of hollow structure and have a hollow structure is mainly used in altogether introduces catalytic combustion tail gas heating adsorbent bed metal structure.Give this adsorbent equipment fast cooling in use if desired,, can also directly introduce air from the hot blast import and cool off, thereby enter adsorption process again from desorption process more quickly by threeway and blower fan to improve service efficiency;
(2), catalytic combustion bed second air outlet connects the thermal source wind inlet of a plate type heat exchanger by pipeline, the first thermal source wind outlet of this plate type heat exchanger connects the sidewall hot blast import that adsorbent bed has hollow structure by an adsorbent bed heating blower, plate type heat exchanger is provided with second hot-blast outlet, is used for directly discharging through the gas up to standard of heat exchange;
(3), this plate type heat exchanger is provided with first gas feed to be heated, first gas vent to be heated, second gas feed to be heated and second gas vent to be heated, wherein first gas vent to be heated connects mixed flow heat exchanger second air inlet by pipeline, second gas feed to be heated connects the outlet of desorption circulating fan, second gas vent to be heated connects catalytic combustion bed air inlet, installs one second spark arrester additional between second gas vent to be heated of plate type heat exchanger and catalytic combustion bed air inlet; Described catalytic bed body 21, air inlet 15, air outlet 20, electric heater 16, air distribution plate 17 and catalytic bed 18, the external wall of catalytic bed is fixed with heat-insulation layer 19, this heat-insulation layer is a pyroceram fibre, air outlet is set to 3, catalytic bed comprises catalyst carrier and catalyst, catalyst carrier is a honeycomb ceramic carrier, catalyst is alundum (Al and platinum Palladium, alundum (Al is one year, platinum Palladium is two years, its catalytic bed body upper end is shaped on air inlet, catalytic bed body lower end is shaped on air outlet, be disposed with electric heater in the catalytic bed body from top to bottom, air distribution plate and catalytic bed, catalytic combustion bed are provided with the 3rd air outlet and are used for directly discharging gas up to standard.
The utility model in use, the exhaust gas source of the volatilizable organic pollution of industry is passed through filter successively by pipeline, first spark arrester arrives adsorbent bed, gas after the waste gas of the volatilizable organic pollution of industry is handled through adsorbent bed can reach discharge standard and directly discharge, after the Alveolate activated carbon capable on the adsorbent bed reaches capacity, electric cabinet is controlled corresponding adsorption plant switching by pre-set programs and circuit and is entered the desorption flow process, start the desorption catalyzing combustion system, opening desorption circulating fan fresh air enters from the pipeline fresh inlet and enters adsorbent bed by mixed flow heat exchanger and desorption electric heater and carry out desorption, gas behind the desorption enters the catalytic combustion bed by the plate type heat exchanger and second spark arrester and carries out the catalytic combustion purification, tail gas discharged has reached discharge standard from the catalytic combustion bed, for realizing UTILIZATION OF VESIDUAL HEAT IN, energy-saving and cost-reducing, provide thermal source with this high-temperature tail gas continuation introducing plate type heat exchanger and mixed flow heat exchanger, at this moment the fresh air that enters from fresh inlet at first can carry out heat exchange by plate type heat exchanger, enter adsorbent bed by the auxiliary heating of mixed flow heat exchanger again, reached the temperature that desorption requires owing to flow through the air of mixed flow heat exchanger, so can close the desorption electric heater, that is to say when just beginning to start the desorption catalyzing combustion system, need to open the desorption electric heater, after catalyticing combustion process starts successfully and stablizes, promptly can close the desorption electric heater, save electric energy, temperature was still about 100 ℃ after the tail gas of catalytic combustion bed discharge passed through plate type heat exchanger in addition, directly it is sent into the import of adsorbent bed hot blast by the adsorbent bed heating blower, this hot blast flows in active carbon dividing plate with hollow structure and sidewall with hollow structure, discharge from hot-blast outlet, by the metal structure in the direct heating adsorbent bed, adsorbent bed desorption programming rate is accelerated, realize saving energy and reduce the cost by making full use of the catalytic combustion waste heat, effect is particularly remarkable when the northern area winter operation.

Claims (4)

1. energy-efficient cleaning system of the volatilizable organic pollution of industry, comprise filter, first spark arrester, adsorbent bed, absorption main air blower, catalytic combustion bed, mixed flow heat exchanger, desorption electric heater and desorption circulating fan, filter, spark arrester, adsorbent bed and absorption main air blower connect successively by pipeline, catalytic combustion bed first air outlet connects mixed flow heat exchanger first air inlet by pipeline, mixed flow heat exchanger air outlet connects the desorption circulating fan by desorption electric heater and adsorbent bed, it is characterized in that:
(1), adsorbent bed comprises the air intake expansion mouth, active-carbon bed body and air-out choke, the two sides that active-carbon bed body is relative connects air intake expansion mouth and air-out choke respectively, on the air intake expansion mouth, be fixed with air distribution plate, multilayer active carbon dividing plate is set in the active-carbon bed body, wherein active-carbon bed body two lateral walls all is set to have the sidewall of hollow structure, the active carbon dividing plate is set to have the active carbon dividing plate of hollow structure, active carbon dividing plate with hollow structure is communicated with the sidewall with hollow structure, has on the two side of hollow structure to be respectively arranged with hot blast import and hot-blast outlet;
(2), catalytic combustion bed second air outlet connects the thermal source wind inlet of a plate type heat exchanger by pipeline, the first thermal source wind outlet of this plate type heat exchanger connects the sidewall hot blast import that adsorbent bed has hollow structure by an adsorbent bed heating blower;
(3), this plate type heat exchanger is provided with first gas feed to be heated, first gas vent to be heated, second gas feed to be heated and second gas vent to be heated, wherein first gas vent to be heated connects mixed flow heat exchanger second air inlet by pipeline, second gas feed to be heated connects the outlet of desorption circulating fan, and second gas vent to be heated connects catalytic combustion bed air inlet.
2. the energy-efficient cleaning system of the volatilizable organic pollution of industry according to claim 1, it is characterized in that: described catalytic combustion bed comprises catalytic bed body, air inlet, air outlet, catalysis electric heater, air distribution plate and catalytic bed, its catalytic bed body upper end is shaped on air inlet, catalytic bed body lower end is shaped on air outlet, be disposed with catalysis electric heater, air distribution plate and catalytic bed in the catalytic bed body from top to bottom, the external wall of this catalytic bed installs the pyroceram fibre heat-insulation layer.
3. the energy-efficient cleaning system of the volatilizable organic pollution of industry according to claim 2, it is characterized in that: described catalytic bed comprises catalyst carrier and catalyst, catalyst carrier is a honeycomb ceramic body.
4. the energy-efficient cleaning system of the volatilizable organic pollution of industry according to claim 1 is characterized in that: described at plate type heat exchanger second gas vent to be heated and catalytic combustion bed air inlet between install one second spark arrester additional.
CN2011200817423U 2011-03-25 2011-03-25 High-efficiency energy-saving purification system for industrial volatile organic pollutants Expired - Lifetime CN202087196U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102172462A (en) * 2011-03-25 2011-09-07 天津理工大学 Efficient energy-saving purifying system for industrial volatile organic pollutants
CN103446843A (en) * 2013-09-27 2013-12-18 天津赛智科技发展有限公司 Energy-saving adsorption bed with controllable output concentration
CN103463929A (en) * 2013-09-27 2013-12-25 天津赛智科技发展有限公司 Stripping system used for treating industrial volatile organic pollutants
CN103486601A (en) * 2013-09-27 2014-01-01 天津赛智科技发展有限公司 Energy-saving type catalytic bed system with controllable temperature
CN103480235A (en) * 2013-09-27 2014-01-01 天津赛智科技发展有限公司 Energy-saving adsorption system with controllable output concentration dedicated to painting workshops
CN105854434A (en) * 2016-05-24 2016-08-17 碧海舟(北京)节能环保装备有限公司 VOCs resourceful treatment system
CN109482037A (en) * 2018-10-23 2019-03-19 东华大学 A kind of gas pollutant Porous Medium Adsorption device of balanced ventilation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102172462A (en) * 2011-03-25 2011-09-07 天津理工大学 Efficient energy-saving purifying system for industrial volatile organic pollutants
CN103446843A (en) * 2013-09-27 2013-12-18 天津赛智科技发展有限公司 Energy-saving adsorption bed with controllable output concentration
CN103463929A (en) * 2013-09-27 2013-12-25 天津赛智科技发展有限公司 Stripping system used for treating industrial volatile organic pollutants
CN103486601A (en) * 2013-09-27 2014-01-01 天津赛智科技发展有限公司 Energy-saving type catalytic bed system with controllable temperature
CN103480235A (en) * 2013-09-27 2014-01-01 天津赛智科技发展有限公司 Energy-saving adsorption system with controllable output concentration dedicated to painting workshops
CN103463929B (en) * 2013-09-27 2015-05-27 天津赛智科技发展有限公司 Stripping system used for treating industrial volatile organic pollutants
CN103480235B (en) * 2013-09-27 2015-08-26 天津赛智科技发展有限公司 Be exclusively used in painting workshop and export the controlled energy-saving absorption system of concentration
CN105854434A (en) * 2016-05-24 2016-08-17 碧海舟(北京)节能环保装备有限公司 VOCs resourceful treatment system
CN109482037A (en) * 2018-10-23 2019-03-19 东华大学 A kind of gas pollutant Porous Medium Adsorption device of balanced ventilation

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