CN102188875B - Energy-saving high-efficiency purification system for industrial volatilizable organic pollutant - Google Patents
Energy-saving high-efficiency purification system for industrial volatilizable organic pollutant Download PDFInfo
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- CN102188875B CN102188875B CN 201110073439 CN201110073439A CN102188875B CN 102188875 B CN102188875 B CN 102188875B CN 201110073439 CN201110073439 CN 201110073439 CN 201110073439 A CN201110073439 A CN 201110073439A CN 102188875 B CN102188875 B CN 102188875B
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Abstract
The invention relates to an energy-saving high-efficiency purification system for industrial volatilizable organic pollutant. A catalytic electric heater, a grid plate and a catalytic bed layer are arranged successively in the body of a catalytic combustion bed from top to bottom, wherein the first air outlet of the catalytic combustion bed is connected with the air inlet of a mixed-flow heat exchanger by a pipeline; an activated carbon plate of an adsorption bed, which is of a hollow structure, is communicated with a side wall of a hollow structure, and two side walls of a hollow structure are respectively provided with a hot air inlet and a hot air outlet; and the second air outlet of the catalytic combustion bed is connected with the hot air inlet of the side wall of a hollow structure of the adsorption bed by a heating fan of the adsorption bed. The system provided by the invention has a simple and reasonable structure, can effectively lower the energy consumption, improve the purification rate, prolong the service life of the catalyst, shorten the desorption flow time, improve the purification rate and reduce the operation cost, and is a safe and reliable energy-saving high-efficiency purification system for industrial volatilizable organic pollutants.
Description
Technical field
The invention belongs to organic pollution cleaning system field, especially a kind of energy-saving high-efficiency purification system for industrial volatilizable organic pollutant.
Background technology
Industry volatilizable organic pollutant purifying system mainly comprises at present, comprise the mixed flow heat exchanger, new air flow-mixing blower fan, the catalytic combustion bed, the desorption electric heater, desorption circulating fan and adsorbent bed, catalytic combustion bed the first air outlet and new air flow-mixing blower fan air outlet connect mixed flow heat exchanger air inlet by pipeline respectively, mixed flow heat exchanger air outlet connects the desorption circulating fan by desorption electric heater and adsorbent bed, although this system has certain clean-up effect, 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 larger, 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. the purifying rate of catalytic combustion bed is lower, catalyst is short service life, trace it to its cause for: industrial volatile organic pollutants is to enter catalytic combustion bed of the prior art from the below, discharge from the top, the catalytic combustion that lower floor occurs 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 volatile organic pollutants catalyticing combustion process free convection direction is bottom-up operation in addition, and during through the catalytic combustion bed, waste gas begins to accelerate to rise, and causes reduce the time of contact of waste gas and catalytic combustion bed, causes purifying rate to reduce.Two reasons cause that whole cleaning system energy consumption of the prior art is high, purifying rate is low in sum, catalyst shortens service life, the desorption flow time is long, purification efficiency is lower, and operating cost is higher.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of and can effectively reduce energy consumption, improve purifying rate, extending catalyst service life, shorten the desorption flow time, improve purification efficiency, reduce the energy-saving high-efficiency purification system for industrial volatilizable organic pollutant of operating cost.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of energy-saving high-efficiency purification system for industrial volatilizable organic pollutant, comprise the mixed flow heat exchanger, new air flow-mixing blower fan, the catalytic combustion bed, the desorption electric heater, desorption circulating fan and adsorbent bed, new air flow-mixing blower fan air outlet connects mixed flow heat exchanger air inlet by pipeline, mixed flow heat exchanger air outlet is by the desorption electric heater, adsorbent bed and desorption circulating fan connect catalytic combustion bed air inlet, its (1), the catalytic combustion bed 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 with air inlet, catalytic bed body lower end is shaped with air outlet, this air outlet comprises the first air outlet, the second air outlet and the 3rd air outlet, be disposed with from top to bottom the catalysis electric heater in the catalytic bed body, air distribution plate and catalytic bed, the external wall of this catalytic bed is fixedly mounted with the pyroceram fibre heat-insulation layer; Catalytic combustion bed the first air outlet connects the air inlet of mixed flow heat exchanger by pipeline;
(2), 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 respectively air intake expansion mouth and air-out choke, be fixed with air distribution plate at the air intake expansion mouth, 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;
(3), catalytic combustion bed the second air outlet connects the sidewall hot blast import that adsorbent bed has hollow structure by an adsorbent bed heating blower.
And described catalytic bed comprises catalyst carrier and catalyst, and catalyst carrier is honeycomb ceramic body, and catalyst is alundum (Al2O3) and Bo, Palladium.
And, describedly between desorption circulating fan and catalytic combustion bed, install a spark arrester additional.
Advantage of the present invention and beneficial effect are:
1, 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 with air inlet, catalytic bed body lower end is shaped with air outlet, air outlet comprises the first air outlet, the second air outlet and the 3rd air outlet, be disposed with from top to bottom the catalysis electric heater in the catalytic bed body, air distribution plate and catalytic bed, the external wall of this catalytic bed is fixedly mounted with the pyroceram fibre heat-insulation layer, this structure Effective Raise 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.
2, 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 respectively air intake expansion mouth and air-out choke, be fixed with air distribution plate at the air intake expansion mouth, 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 the second air outlet 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, take full advantage 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 at the northern area winter temperature low, the desorption extending heating time, power consumption increases, even the technical barrier that the desorption flow process can not normally be moved.
3, this cleaning system installs a spark arrester additional between desorption circulating fan and catalytic combustion bed, has increased Security of the system and reliability, prevents the generation of contingency.
4, system architecture advantages of simple of the present invention, can effectively reduce energy consumption, improve purifying rate, extending catalyst service life, shorten the desorption flow time, improve purification efficiency, reducing operating cost, is a kind of safe and reliable energy-saving high-efficiency purification system for industrial volatilizable organic pollutant.
Description of drawings
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is the structural representation of adsorbent bed of the present invention;
Fig. 3 is the right view (omitting air-out choke and Alveolate activated carbon capable) of Fig. 2;
Fig. 4 is the top view of Fig. 2;
Fig. 5 is the structural representation of catalytic combustion bed of the present invention;
Fig. 6 is the top view of Fig. 5.
The specific embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of energy-saving high-efficiency purification system for industrial volatilizable organic pollutant, comprise mixed flow heat exchanger, new air flow-mixing blower fan, catalytic combustion bed, desorption electric heater, desorption circulating fan and adsorbent bed, new air flow-mixing blower fan air outlet connects mixed flow heat exchanger air inlet by pipeline, mixed flow heat exchanger air outlet connects catalytic combustion bed air inlet by desorption electric heater, adsorbent bed and desorption circulating fan, and its innovative point is:
(1), the catalytic combustion bed comprises 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 pyroceram fibre, catalytic bed comprises catalyst carrier and catalyst, catalyst carrier is honeycomb ceramic carrier, catalyst is alundum (Al2O3) and platinum Palladium, alundum (Al2O3) is one year, platinum Palladium is two years, its catalytic bed body upper end is shaped with air inlet, catalytic bed body lower end is shaped with air outlet, this air outlet comprises the first air outlet, the second air outlet and the 3rd air outlet, be disposed with from top to bottom electric heater in the catalytic bed body, air distribution plate and catalytic bed, catalytic combustion bed the first air outlet is by the air inlet of pipeline connection mixed flow heat exchanger, and the catalytic combustion bed arranges the 3rd air outlet and is used for directly discharging gas up to standard;
(2), 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 respectively spark arrester and desorption electric heater 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 respectively air intake expansion mouth and air-out choke, be fixed with air distribution plate 11 at the air intake expansion mouth, 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 volatile organic pollutants 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 thermal resistance connector 14 that is provided with on the active-carbon bed body sidewall, be used for connection thermal resistor, 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 after the active carbon dividing plate with hollow structure and sidewall with hollow structure flow 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 introducing catalytic combustion tail gas heating adsorbent bed metal structure altogether.If need to this adsorbent equipment fast cooling, to improve service efficiency, can also directly introduce air by threeway and blower fan from the hot blast import and cool off, thereby enter again adsorption process from desorption process more quickly in use;
(3), catalytic combustion bed the second air outlet connects the sidewall hot blast import that adsorbent bed has hollow structure by an adsorbent bed heating blower, installs a spark arrester additional between desorption circulating fan and catalytic combustion bed.
The present invention in use, after Alveolate activated carbon capable on the adsorbent bed reaches capacity, begin to enter the desorption flow process, new air flow-mixing blower fan enters adsorbent bed with fresh air by mixed flow heat exchanger and desorption electric heater and carries out desorption, gas behind the desorption enters the catalytic combustion bed by desorption circulating fan and spark arrester and carries out purification of combustion, out tail gas has reached discharge standard from the catalytic combustion bed, but this tail gas continuation circulation can be entered the mixed flow heat exchanger for energy-saving and cost-reducing, so that thermal source to be provided, tail gas with heat enters adsorbent bed by the mixed flow heat exchanger, reached desorption temperature 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, namely 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 adsorption bed, adsorbent bed desorption programming rate is accelerated, realize saving energy and reduce the cost by taking full advantage of the catalytic combustion waste heat, effect is particularly remarkable when the northern area winter operation.
Claims (3)
1. energy-saving high-efficiency purification system for industrial volatilizable organic pollutant, comprise mixed flow heat exchanger, new air flow-mixing blower fan, catalytic combustion bed, desorption electric heater, desorption circulating fan and adsorbent bed, new air flow-mixing blower fan air outlet connects mixed flow heat exchanger air inlet by pipeline, mixed flow heat exchanger air outlet connects catalytic combustion bed air inlet by desorption electric heater, adsorbent bed and desorption circulating fan, it is characterized in that:
⑴, catalytic combustion bed comprise catalytic bed body, air inlet, air outlet, catalysis electric heater, air distribution plate and catalytic bed, its catalytic bed body upper end is shaped with air inlet, catalytic bed body lower end is shaped with air outlet, this air outlet comprises the first air outlet, the second air outlet and the 3rd air outlet, be disposed with from top to bottom catalysis electric heater, air distribution plate and catalytic bed in the catalytic bed body, the external wall of this catalytic bed is fixedly mounted with the pyroceram fibre heat-insulation layer; Catalytic combustion bed the first air outlet connects the air inlet of mixed flow heat exchanger by pipeline;
⑵, 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 respectively air intake expansion mouth and air-out choke, be fixed with air distribution plate at the air intake expansion mouth, 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;
⑶, catalytic combustion bed the second air outlet connect the sidewall hot blast import that adsorbent bed has hollow structure by an adsorbent bed heating blower.
2. energy-saving high-efficiency purification system for industrial volatilizable organic pollutant according to claim 1, it is characterized in that: described catalytic bed comprises catalyst carrier and catalyst, catalyst carrier is honeycomb ceramic body, and catalyst is alundum (Al2O3) and platinum, palladium.
3. energy-saving high-efficiency purification system for industrial volatilizable organic pollutant according to claim 1 is characterized in that: install a spark arrester additional between desorption circulating fan and catalytic combustion bed.
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| CN104971617A (en) * | 2014-04-02 | 2015-10-14 | 德清天皓环保科技有限公司 | Multi-module photocatalytic organic waste gas purifier |
| CN104971618A (en) * | 2014-04-02 | 2015-10-14 | 德清天皓环保科技有限公司 | Communication gas shell with waste gas diffusion device |
| CN105289197A (en) * | 2015-11-19 | 2016-02-03 | 苏州韵蓝环保科技有限公司 | Exhaust gas purifier by using double methods |
| CN109011868B (en) * | 2018-08-08 | 2021-12-24 | 中国科学院城市环境研究所 | Catalytic system, application thereof, purification method and purification system |
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| CN2537454Y (en) * | 2001-12-27 | 2003-02-26 | 中国人民解放军63971部队 | Organic waste gas purification treatment system |
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| CN201701856U (en) * | 2010-05-14 | 2011-01-12 | 上海嘉园环保科技有限公司 | Absorption bed and organic waste gas purifying system using same |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2537454Y (en) * | 2001-12-27 | 2003-02-26 | 中国人民解放军63971部队 | Organic waste gas purification treatment system |
| CN2579505Y (en) * | 2002-10-31 | 2003-10-15 | 陈泽枝 | Organic waste gas purifying device |
| CN2590648Y (en) * | 2002-10-31 | 2003-12-10 | 李泽清 | Catalystic combustion device |
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| CN202044887U (en) * | 2011-03-25 | 2011-11-23 | 天津赛智科技发展有限公司 | Energy-saving efficient purification system for industrial volatilizable organic pollutants |
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Effective date of registration: 20210128 Address after: 226600 group 9, Minqiao village, Chengdong Town, Hai'an County, Nantong City, Jiangsu Province Patentee after: NANTONG ZHIHANG ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 300308 Room 303, unit 2, building 4, financial center, intersection of Central West Road and West Third Road, airport logistics processing zone, Dongli District, Tianjin Patentee before: TIANJIN SAIZHI TECHNOLOGY & DEVELOPMENT Co.,Ltd. |
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