CN209341276U - An organic waste gas adsorption-desorption catalytic combustion device - Google Patents
An organic waste gas adsorption-desorption catalytic combustion device Download PDFInfo
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Abstract
本实用新型涉及有机废气处理技术领域，尤其是指一种有机废气吸附脱附催化燃烧装置，其包括预处理箱、第一处理塔、第二处理塔、燃烧室和烟囱，所述第一处理塔和第二处理塔内分别设有用于吸附有机物的第一吸附床和第二吸附床，第一吸附床和第二吸附床分别将第一处理塔和第二处理塔内部分隔成上层空间和下层空间，所述第一处理塔和第二处理塔内分别设有用于对第一吸附床和第二吸附床喷射阻燃冷却介质的多个第一喷头和多个第二喷头，所述第一处理塔外设有用于容纳阻燃冷却介质的储料箱，多个所述第一喷头和多个所述第二喷头分别与储料箱连通。本实用新型可以避免避免第一吸附床和第二吸附床自燃损坏，安全系数较高。
The utility model relates to the technical field of organic waste gas treatment, in particular to an organic waste gas adsorption-desorption catalytic combustion device, which includes a pretreatment box, a first treatment tower, a second treatment tower, a combustion chamber and a chimney. The first treatment The tower and the second treatment tower are respectively provided with a first adsorption bed and a second adsorption bed for adsorbing organic matter, and the first adsorption bed and the second adsorption bed separate the interior of the first treatment tower and the second treatment tower into upper space and In the lower space, the first treatment tower and the second treatment tower are respectively provided with a plurality of first spray heads and a plurality of second spray heads for spraying the flame-retardant cooling medium on the first adsorption bed and the second adsorption bed. A storage tank for accommodating the flame-retardant cooling medium is arranged outside a processing tower, and the plurality of first spray heads and the plurality of second spray heads are respectively communicated with the storage tank. The utility model can avoid spontaneous combustion damage of the first adsorption bed and the second adsorption bed, and has a high safety factor.
Description
技术领域technical field
本实用新型涉及有机废气处理技术领域，尤其是指一种有机废气吸附脱附催化燃烧装置。The utility model relates to the technical field of organic waste gas treatment, in particular to an organic waste gas adsorption-desorption catalytic combustion device.
背景技术Background technique
有机废气主要来源于石油和化工行业生产过程中排放的废气，特点是数量较大，有机物含量波动性大、可燃、有一定毒性，有的还有恶臭，而氯氟烃的排放还会引起臭氧层的破坏。石油和化工工厂及石化产品的存储设施，印刷及其他与石油和化工有关的行业，使用石油、石油化工产品的场合和燃烧设备，以石油产品为燃料的各种交通工具都是有机废气的源头。有机废气一般都存在易燃易爆、有毒有害、不溶于水、溶于有机溶剂、处理难度大的特点。Organic waste gas mainly comes from the waste gas discharged during the production process of the petroleum and chemical industries. It is characterized by large quantities, large fluctuations in organic matter content, flammability, certain toxicity, and some stench. The emission of chlorofluorocarbons can also cause ozone layer pollution. destruction. Petroleum and chemical factories and storage facilities of petrochemical products, printing and other petroleum and chemical related industries, occasions and combustion equipment using petroleum and petrochemical products, and various vehicles fueled by petroleum products are the sources of organic waste gas . Organic waste gas is generally flammable and explosive, toxic and harmful, insoluble in water, soluble in organic solvents, and difficult to treat.
吸附法具有效率高、净化彻底、易于推广实用、环境效益和经济效益良好等优点。有机废气通过活性炭、疏水硅胶等吸附剂时，有机废气组分吸附在吸附剂表面，然后再经过减压脱附或热脱附，富集的有机废气被抽吸到储罐或用其他方法液化，而未被吸附的尾气直接排人大气，从而实现有机废气和空气的分离。The adsorption method has the advantages of high efficiency, thorough purification, easy popularization and practicality, and good environmental and economic benefits. When the organic waste gas passes through adsorbents such as activated carbon and hydrophobic silica gel, the organic waste gas components are adsorbed on the surface of the adsorbent, and then undergo decompression desorption or thermal desorption, and the enriched organic waste gas is sucked into the storage tank or liquefied by other methods , and the unadsorbed tail gas is directly discharged into the atmosphere, so as to realize the separation of organic waste gas and air.
吸附-催化燃烧工艺是20世纪末发展起来的常规吸附方法与催化燃烧方法的组合工艺。该工艺原理是当吸附剂吸附达到饱和后，用热气流将有机物从吸附剂上脱附下来，使其再生，解吸释放的高浓度有机废气送往催化器催化燃烧，燃烧过程中产生的热量，一部分用于预热解吸后的高浓度有机废气，另一部分用于热解吸。Adsorption-catalytic combustion process is a combined process of conventional adsorption method and catalytic combustion method developed at the end of the 20th century. The principle of the process is that when the adsorption of the adsorbent reaches saturation, the organic matter is desorbed from the adsorbent by hot air flow to regenerate it, and the high-concentration organic waste gas released by desorption is sent to the catalytic converter for catalytic combustion. The heat generated during the combustion process, One part is used for preheating the high-concentration organic waste gas after desorption, and the other part is used for thermal desorption.
但是由于有机污染物容易燃烧，目前的吸附-催化燃烧装置在脱附加热过程中不可避免的会出现升温不均匀、局部温度过高，甚至燃烧爆炸等的安全隐患。因而现有的吸附-催化燃烧装置的安全性能还有待提高。However, because organic pollutants are easy to burn, the current adsorption-catalytic combustion device will inevitably have safety hazards such as uneven temperature rise, excessive local temperature, and even combustion and explosion during the process of de-additional heat. Therefore, the safety performance of the existing adsorption-catalytic combustion device still needs to be improved.
发明内容Contents of the invention
本实用新型提供一种有机废气吸附脱附催化燃烧装置，装置不易发生自燃或者爆炸，安全系数较高。The utility model provides an organic waste gas adsorption-desorption catalytic combustion device, which is not prone to spontaneous combustion or explosion and has a high safety factor.
为了解决上述技术问题，本实用新型采用如下技术方案：In order to solve the above technical problems, the utility model adopts the following technical solutions:
一种有机废气吸附脱附催化燃烧装置，其包括预处理箱、第一处理塔、第二处理塔、燃烧室和烟囱，An organic waste gas adsorption-desorption catalytic combustion device, which includes a pretreatment box, a first treatment tower, a second treatment tower, a combustion chamber and a chimney,
所述预处理箱设有第一吸附进气管和第二吸附进气管分别与第一处理塔和第二处理塔底部连通，第一处理塔和第二处理塔顶部分别设有第一吸附出气管和第二吸附出气管连通吸附风机，所述吸附风机的出风口与烟囱连通；The pretreatment box is provided with a first adsorption inlet pipe and a second adsorption inlet pipe respectively connected to the bottom of the first treatment tower and the second treatment tower, and the top of the first treatment tower and the second treatment tower are respectively provided with a first adsorption outlet pipe The second adsorption air outlet pipe is connected to the adsorption fan, and the air outlet of the adsorption fan is connected to the chimney;
所述第一处理塔和第二处理塔顶部分别设有第一脱附进气管和第二脱附进气管，所述第一处理塔和第二处理塔底部分别设有第一脱附出气管和第二脱附出气管与燃烧室连通，所述燃烧室设有排气管连通脱附风机，所述脱附风机的出风口设有第一排气支管与烟囱连通，所述燃烧室设有用于催化分解有机物的催化床；The top of the first treatment tower and the second treatment tower are respectively provided with a first desorption inlet pipe and a second desorption inlet pipe, and the bottom of the first treatment tower and the second treatment tower are respectively provided with a first desorption outlet pipe and the second desorption outlet pipe communicate with the combustion chamber, the combustion chamber is provided with an exhaust pipe to communicate with the desorption fan, the air outlet of the desorption fan is provided with a first exhaust branch pipe to communicate with the chimney, and the combustion chamber is provided with There are catalytic beds for the catalytic decomposition of organic matter;
所述第一处理塔和第二处理塔内分别设有用于吸附有机物的第一吸附床和第二吸附床，第一吸附床和第二吸附床分别将第一处理塔和第二处理塔内部分隔成上层空间和下层空间，所述第一处理塔和第二处理塔内分别设有用于对第一吸附床和第二吸附床喷射阻燃冷却介质的多个第一喷头和多个第二喷头，所述第一处理塔外设有用于容纳阻燃冷却介质的储料箱，多个所述第一喷头和多个所述第二喷头分别与储料箱连通。The first treatment tower and the second treatment tower are respectively provided with a first adsorption bed and a second adsorption bed for adsorbing organic matter, and the first adsorption bed and the second adsorption bed separate the inside of the first treatment tower and the second treatment tower. Separated into an upper space and a lower space, the first treatment tower and the second treatment tower are respectively provided with a plurality of first nozzles and a plurality of second nozzles for spraying the first adsorption bed and the second adsorption bed with a flame-retardant cooling medium. A spray head, a stock tank for containing the flame retardant cooling medium is arranged outside the first treatment tower, and a plurality of the first spray heads and a plurality of the second spray heads are respectively communicated with the stock tank.
进一步地，所述储料箱设有用于控制多个第一喷头和多个第二喷头喷射阻燃冷却介质的控制器，所述第一吸附床和第二吸附床分别设有第一温度传感器和第二温度传感器，第一温度传感器和第二温度传感器分别与控制器电连接，当第一温度传感器或第二温度传感器的检测值大于预先设定值时，第一温度传感器或第二温度传感器向控制器输出第一信号或第二信号，所述控制器控制多个第一喷头或多个第二喷头喷射阻燃冷却介质。Further, the storage box is provided with a controller for controlling the spraying of flame-retardant cooling medium by a plurality of first nozzles and a plurality of second nozzles, and the first adsorption bed and the second adsorption bed are respectively provided with first temperature sensors and the second temperature sensor, the first temperature sensor and the second temperature sensor are electrically connected to the controller respectively, when the detection value of the first temperature sensor or the second temperature sensor is greater than the preset value, the first temperature sensor or the second temperature sensor The sensor outputs the first signal or the second signal to the controller, and the controller controls the plurality of first spray heads or the plurality of second spray heads to spray the flame retardant cooling medium.
进一步地，所述第一吸附进气管和第二吸附进气管分别第一吸附阀和第二吸附阀，所述第一吸附出气管和第二吸附出气管分别设有第三吸附阀和第四吸附阀；第一脱附进气管和第二脱附进气管分别设有第一脱附阀和第二脱附阀，所述第一脱附出气管和第二脱附出气管分别设有第三脱附阀和第四脱附阀。Further, the first adsorption inlet pipe and the second adsorption inlet pipe are respectively a first adsorption valve and a second adsorption valve, and the first adsorption outlet pipe and the second adsorption outlet pipe are respectively provided with a third adsorption valve and a fourth adsorption valve. Adsorption valve; the first desorption inlet pipe and the second desorption inlet pipe are respectively provided with a first desorption valve and a second desorption valve, and the first desorption outlet pipe and the second desorption outlet pipe are respectively provided with a first desorption outlet pipe Three desorption valves and a fourth desorption valve.
进一步地，还包括用于制造氮气的制氮机组，所述制氮机组设有输氮管分别连通第一脱附进气管和第二脱附进气管。Further, it also includes a nitrogen-generating unit for producing nitrogen, and the nitrogen-generating unit is provided with nitrogen delivery pipes respectively connected to the first desorption inlet pipe and the second desorption inlet pipe.
进一步地，所述燃烧室内的催化床将燃烧室分隔成上层的燃烧空间和下层的加热空间，所述排气管连通燃烧空间，所述燃烧空间内设有第一预热管和第二预热管分别连通第一脱附出气管和第二脱附出气管，所述第一预热管和第二预热管分别远离第一脱附出气管和第二脱附出气管的一端位于加热空间，所述加热空间内设有加热管。Further, the catalytic bed in the combustion chamber divides the combustion chamber into an upper combustion space and a lower heating space, the exhaust pipe communicates with the combustion space, and the combustion space is provided with a first preheating pipe and a second preheating pipe. The heat pipes are connected to the first desorption gas outlet pipe and the second desorption gas outlet pipe respectively, and the ends of the first preheating pipe and the second preheating pipe which are far away from the first desorption gas outlet pipe and the second desorption gas outlet pipe are located at the heating space, and heating pipes are arranged in the heating space.
进一步地，所述排气管设有防火阀。Further, the exhaust pipe is provided with a fire damper.
进一步地，所述燃烧室设有泄爆门，所述燃烧室内设有压强传感器与泄爆门电连接，当压强传感器检测到燃烧室内的压强大于预先设定值时，所述泄爆门启动为燃烧室泄压。Further, the combustion chamber is provided with an explosion vent door, and a pressure sensor is provided in the combustion chamber to be electrically connected to the explosion vent door. When the pressure sensor detects that the pressure in the combustion chamber is higher than a preset value, the explosion vent door is activated. Depressurize the combustion chamber.
进一步地，所述第一排气支管设有第二排气支管分别连通第一脱附进气管和第二脱附进气管，所述第二排气支管上设有排气阀门。Further, the first exhaust branch pipe is provided with a second exhaust branch pipe respectively connected to the first desorption intake pipe and the second desorption intake pipe, and the second exhaust branch pipe is provided with an exhaust valve.
进一步地，所述第一排气支管上设有混流换热器，所述混流换热器的换热管与第一支管连通，所述混流换热器的进气端连通有补冷分机，所述混流换热器的出气端与第二排气支管连通。Further, a mixed-flow heat exchanger is provided on the first exhaust branch pipe, the heat exchange tube of the mixed-flow heat exchanger communicates with the first branch pipe, and the air inlet end of the mixed-flow heat exchanger is connected with a supplementary cooling sub-unit, The gas outlet end of the mixed flow heat exchanger communicates with the second exhaust branch pipe.
进一步地，所述预处理箱设有用于过滤灰尘的过滤网。Further, the pretreatment box is provided with a filter screen for filtering dust.
本实用新型的有益效果：The beneficial effects of the utility model:
其一，采用吸附浓缩和催化燃烧组合工艺，整个装置实现了净化、脱附过程封闭循环，与回收类有机废气净化装置相比，无须配备压缩空气等附加能源，运行过程不产生二次污染，设备投资及运行费用低；First, the combined process of adsorption concentration and catalytic combustion is adopted, and the whole device realizes a closed cycle of purification and desorption process. Compared with the recycling organic waste gas purification device, it does not need to be equipped with additional energy such as compressed air, and does not generate secondary pollution during operation. Low equipment investment and operating costs;
其二，第一吸附床和第二吸附床分别设有第一温度传感器和第二温度传感器，当第一温度传感器或第二温度传感器的检测值大于预先设定值时，第一温度传感器或第二温度传感器向控制器输出第一信号或第二信号，控制器控制多个第一喷头或多个第二喷头喷射干冰，自动为第一吸附床或第二吸附床急速降温，避免第一吸附床和第二吸附床自燃损坏；Second, the first adsorption bed and the second adsorption bed are respectively provided with a first temperature sensor and a second temperature sensor, and when the detection value of the first temperature sensor or the second temperature sensor is greater than a preset value, the first temperature sensor or The second temperature sensor outputs the first signal or the second signal to the controller, and the controller controls multiple first nozzles or multiple second nozzles to spray dry ice to automatically cool down the first adsorption bed or the second adsorption bed rapidly to avoid the first Spontaneous combustion damage of the adsorption bed and the second adsorption bed;
其三，在第一处理塔和第二处理塔的外面还设有用于制造氮气的制氮机组，所述制氮机组设有输氮管分别连通第一脱附进气管和第二脱附进气管。具体地，在第一处理塔或第二处理塔脱附过程时，间歇向其注入97%氮气，脱附程序完毕后向第一处理塔或者第二处理塔注入97%氮气，避免第一吸附床和第二吸附床由于活性炭自身蓄热自燃；Its three, outside the first treatment tower and the second treatment tower, also be provided with the nitrogen making unit that is used for making nitrogen, described nitrogen making unit is provided with nitrogen delivery pipe and communicates with the first desorption inlet pipe and the second desorption inlet respectively. trachea. Specifically, during the desorption process of the first treatment tower or the second treatment tower, 97% nitrogen is intermittently injected into it, and 97% nitrogen is injected into the first treatment tower or the second treatment tower after the desorption procedure is completed to avoid the first adsorption The bed and the second adsorption bed spontaneously ignite due to the heat storage of the activated carbon itself;
其四，燃烧室设有泄爆门，所述燃烧室内设有压强传感器与泄爆门电连接，当压强传感器检测到燃烧室内的压强大于预先设定值时，所述泄爆门启动为燃烧室泄压，避免压力过高产生爆炸。Fourth, the combustion chamber is provided with an explosion vent door, and a pressure sensor is provided in the combustion chamber to be electrically connected to the explosion vent door. When the pressure sensor detects that the pressure in the combustion chamber is higher than a preset value, the explosion vent door starts to burn Chamber pressure relief to avoid explosion due to excessive pressure.
附图说明Description of drawings
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments or the description of the prior art. Obviously, the accompanying drawings in the following description are only the present invention For some novel embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.
图1为本实用新型的整体结构示意图；Fig. 1 is the overall structural representation of the utility model;
图2为本实用新型的第一处理塔和第二处理塔结构示意图；Fig. 2 is the first processing tower of the present utility model and the structural representation of the second processing tower;
图3为本实用新型的燃烧室结构示意图；Fig. 3 is the structural representation of the combustion chamber of the present utility model;
图4为本实用新型的第一温度传感器、第二温度传感器、控制器、第一喷头、第二喷头和补冷分机的电连接示意图；Fig. 4 is a schematic diagram of the electric connection of the first temperature sensor, the second temperature sensor, the controller, the first spray head, the second spray head and the auxiliary cooling extension of the present invention;
图5为本实用新型的压强传感器和泄爆门的电连接结构示意图。Fig. 5 is a schematic diagram of the electrical connection structure of the pressure sensor and the explosion vent door of the present invention.
附图标记说明：100、预处理箱；110、第一吸附进气管；111、第一吸附阀；120、第二吸附进气管；121、第二吸附阀；130、过滤网；200、第一处理塔；210、第一吸附出气管；211、第三吸附阀；220、第一脱附进气管；221、第一脱附阀；230、第一脱附出气管；231、第三脱附阀；240、第一吸附床；250、第一喷头；300、第二处理塔；310、第二吸附出气管；311、第四吸附阀；320、第二脱附进气管；321、第二脱附阀；330、第二脱附出气管；331、第四脱附阀；340、第二吸附床；350、第二喷头；400、燃烧室；401、燃烧空间；402、加热空间；410、排气管；420、催化床；431、第一预热管；432、第二预热管；440、加热管；450、防火阀；460、泄爆门；461、压强传感器；500、烟囱；510、排气风机；610、吸附风机；620、脱附风机；621、第一排气支管；622、第二排气支管；623、排气阀门；710、储料箱；720、控制器；730、第一温度传感器；740、第二温度传感器；750、制氮机组；751、输氮管；760、混流换热器；761、补冷分机。Explanation of reference numerals: 100, pretreatment box; 110, first adsorption inlet pipe; 111, first adsorption valve; 120, second adsorption inlet pipe; 121, second adsorption valve; 130, filter screen; 200, first Processing tower; 210, the first adsorption outlet pipe; 211, the third adsorption valve; 220, the first desorption inlet pipe; 221, the first desorption valve; 230, the first desorption outlet pipe; 231, the third desorption Valve; 240, the first adsorption bed; 250, the first nozzle; 300, the second treatment tower; 310, the second adsorption outlet pipe; 311, the fourth adsorption valve; 320, the second desorption inlet pipe; 321, the second Desorption valve; 330, second desorption outlet pipe; 331, fourth desorption valve; 340, second adsorption bed; 350, second nozzle; 400, combustion chamber; 401, combustion space; 402, heating space; 410 , exhaust pipe; 420, catalytic bed; 431, first preheating pipe; 432, second preheating pipe; 440, heating pipe; 450, fire damper; 460, explosion vent door; 461, pressure sensor; 500, chimney ;510, exhaust fan; 610, adsorption fan; 620, desorption fan; 621, first exhaust branch pipe; 622, second exhaust branch pipe; 623, exhaust valve; 710, storage box; 720, controller 730, the first temperature sensor; 740, the second temperature sensor; 750, the nitrogen generating unit; 751, the nitrogen delivery pipe; 760, the mixed flow heat exchanger;
具体实施方式Detailed ways
为了便于本领域技术人员的理解，下面结合实施例与附图对本实用新型作进一步的说明，实施方式提及的内容并非对本实用新型的限定。In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model.
如图1所示，本实用新型提供的一种有机废气吸附脱附催化燃烧装置，其包括预处理箱100、第一处理塔200、第二处理塔300、燃烧室400和烟囱500，所述预处理箱100设有第一吸附进气管110和第二吸附进气管120分别与第一处理塔200和第二处理塔300底部连通，第一处理塔200和第二处理塔300顶部分别设有第一吸附出气管210和第二吸附出气管310连通吸附风机610，所述吸附风机610的出风口与烟囱500连通；所述第一处理塔200和第二处理塔300顶部分别设有第一脱附进气管220和第二脱附进气管320，所述第一处理塔200和第二处理塔300底部分别设有第一脱附出气管230和第二脱附出气管330与燃烧室400连通，所述燃烧室400设有排气管410连通脱附风机620，所述脱附风机620的出风口设有第一排气支管621与烟囱500连通，所述燃烧室400设有用于催化分解有机物催化床420（参见图3）；所述第一处理塔200和第二处理塔300内分别设有用于吸附有机物的第一吸附床240和第二吸附床340（参见图2），第一吸附床240和第二吸附床340分别将第一处理塔200和第二处理塔300内部分隔成上层空间和下层空间（图中没有标注）。As shown in Figure 1, the utility model provides an organic waste gas adsorption-desorption catalytic combustion device, which includes a pretreatment box 100, a first treatment tower 200, a second treatment tower 300, a combustion chamber 400 and a chimney 500. The pretreatment box 100 is provided with the first adsorption inlet pipe 110 and the second adsorption inlet pipe 120 respectively connected with the bottom of the first treatment tower 200 and the second treatment tower 300, and the top of the first treatment tower 200 and the second treatment tower 300 are respectively provided with The first adsorption air outlet pipe 210 and the second adsorption air outlet pipe 310 communicate with the adsorption fan 610, and the air outlet of the adsorption fan 610 communicates with the chimney 500; Desorption inlet pipe 220 and the second desorption inlet pipe 320, the bottom of the first treatment tower 200 and the second treatment tower 300 are respectively provided with the first desorption outlet pipe 230 and the second desorption outlet pipe 330 and the combustion chamber 400 The combustion chamber 400 is provided with an exhaust pipe 410 to communicate with the desorption blower 620, and the air outlet of the desorption blower 620 is provided with a first exhaust branch pipe 621 to communicate with the chimney 500, and the combustion chamber 400 is provided with a catalytic Catalytic bed 420 for decomposing organic matter (see Figure 3); the first treatment tower 200 and the second treatment tower 300 are respectively provided with a first adsorption bed 240 and a second adsorption bed 340 (see Figure 2) for adsorbing organic matter, the second An adsorption bed 240 and a second adsorption bed 340 respectively separate the interior of the first treatment tower 200 and the second treatment tower 300 into an upper space and a lower space (not marked in the figure).
具体工作时，对于吸附：吸附风机610运行，有机废气首先经过预处理到达第一处理塔200和第二处理塔300，第一处理塔200和第二处理塔300内分别第一吸附床240和第二吸附床340可以吸附有机废气内的有机物，处理后的气体从烟囱500排出；对于脱附：待第一吸附床240或第二吸附床340饱和时，脱附风机620运行，用热气流将有机物从第一吸附床240和第二吸附床340上脱附下来使活性炭再生，脱附下来的有机物进入到燃烧室400的催化床420上进行加热分解，最后排出烟囱500。During the specific work, for adsorption: the adsorption fan 610 is running, and the organic waste gas is firstly pretreated to reach the first treatment tower 200 and the second treatment tower 300, and the first adsorption bed 240 and the second treatment tower 300 respectively in the first treatment tower 200 and The second adsorption bed 340 can adsorb the organic matter in the organic waste gas, and the gas after treatment is discharged from the chimney 500; for desorption: when the first adsorption bed 240 or the second adsorption bed 340 are saturated, the desorption fan 620 runs and uses a hot air flow The organic matter is desorbed from the first adsorption bed 240 and the second adsorption bed 340 to regenerate the activated carbon, and the desorbed organic matter enters the catalytic bed 420 of the combustion chamber 400 for thermal decomposition, and finally exits the chimney 500 .
优选地，这里的第一吸附床240和第二吸附床340由蜂窝状活性炭构成，蜂窝状活性炭用活性炭和辅助材料制成，蜂窝状结构，产品体积小、比表面积大、吸附效率高、风阻系数小，可降低吸附床的造价和运行成本，同时对废气处理的净化效率高，净化后气体完全满足环保排放要求。作为一种新型环保吸附材料，主要应用于中低浓度、大风量的各种有机废气净化。Preferably, the first adsorption bed 240 and the second adsorption bed 340 here are made of honeycomb activated carbon, and the honeycomb activated carbon is made of activated carbon and auxiliary materials. The honeycomb structure has a small product volume, a large specific surface area, high adsorption efficiency, and low wind resistance. The coefficient is small, which can reduce the cost and operation cost of the adsorption bed. At the same time, the purification efficiency of waste gas treatment is high, and the purified gas fully meets the environmental protection emission requirements. As a new type of environmentally friendly adsorption material, it is mainly used in the purification of various organic waste gases with medium and low concentrations and large air volumes.
如图1所示，所述预处理箱100设有用于过滤灰尘的过滤网130，过滤网130可以对进入第一处理塔200和第二处理塔300的有机废气进行初步过滤处理，去除有机废气中的灰尘。As shown in Figure 1, the pretreatment box 100 is provided with a filter screen 130 for filtering dust, and the filter screen 130 can perform preliminary filtration treatment on the organic waste gas entering the first treatment tower 200 and the second treatment tower 300 to remove the organic waste gas in the dust.
如图1、图2和图4所示，所述第一处理塔200和第二处理塔300内分别设有用于对第一吸附床240和第二吸附床340喷射阻燃冷却介质的多个第一喷头250和多个第二喷头350，所述第一处理塔200外设有用于容纳阻燃冷却介质的储料箱710，这里的阻燃冷却介质为干冰，多个所述第一喷头250和多个所述第二喷头350分别与储料箱710连通。所述储料箱710设有用于控制多个第一喷头250和多个第二喷头350喷射阻燃冷却介质的控制器720，所述第一吸附床240和第二吸附床340分别设有第一温度传感器730和第二温度传感器740，第一温度传感器730和第二温度传感器740分别与控制器720电连接，当第一温度传感器730或第二温度传感器740的检测值大于预先设定值时，第一温度传感器730或第二温度传感器740向控制器720输出第一信号或第二信号，所述控制器720控制多个第一喷头250或多个第二喷头350喷射阻燃冷却介质。As shown in Fig. 1, Fig. 2 and Fig. 4, the first processing tower 200 and the second processing tower 300 are respectively provided with a plurality of cooling media for spraying the first adsorption bed 240 and the second adsorption bed 340. The first spray nozzle 250 and a plurality of second spray nozzles 350, the first processing tower 200 is provided with a stock tank 710 for containing the flame retardant cooling medium, where the flame retardant cooling medium is dry ice, and a plurality of the first spray nozzles 250 and the plurality of second spray heads 350 communicate with the storage tank 710 respectively. The material storage box 710 is provided with a controller 720 for controlling the spraying of the flame retardant cooling medium by the multiple first nozzles 250 and the multiple second nozzles 350, and the first adsorption bed 240 and the second adsorption bed 340 are respectively provided with a second A temperature sensor 730 and a second temperature sensor 740, the first temperature sensor 730 and the second temperature sensor 740 are electrically connected to the controller 720 respectively, when the detection value of the first temperature sensor 730 or the second temperature sensor 740 is greater than the preset value , the first temperature sensor 730 or the second temperature sensor 740 outputs the first signal or the second signal to the controller 720, and the controller 720 controls the plurality of first nozzles 250 or the plurality of second nozzles 350 to spray the flame retardant cooling medium .
具体地，第一吸附床240和第二吸附床340内的活性炭吸附达到饱和后需要热气流脱附，脱附气流温度较高，在某些时段由于气流分布不均匀造成局部温度上升过快，可能引发活性炭自燃，需要阻燃和降温。第一吸附床240和第二吸附床340分别设有第一温度传感器730和第二温度传感器740，当第一温度传感器730或第二温度传感器740的检测值大于预先设定值时，第一温度传感器730或第二温度传感器740向控制器720输出第一信号或第二信号，控制器720控制多个第一喷头250或多个第二喷头350喷射干冰，自动为第一吸附床240或第二吸附床340急速降温，避免第一吸附床240和第二吸附床340自燃损坏。Specifically, after the activated carbon adsorption in the first adsorption bed 240 and the second adsorption bed 340 reaches saturation, desorption by hot gas flow is required, and the temperature of the desorption gas flow is relatively high. In certain periods of time, the local temperature rises too fast due to the uneven distribution of the gas flow. Activated carbon may cause spontaneous combustion, which requires flame retardancy and cooling. The first adsorption bed 240 and the second adsorption bed 340 are respectively provided with a first temperature sensor 730 and a second temperature sensor 740, when the detection value of the first temperature sensor 730 or the second temperature sensor 740 is greater than a preset value, the first The temperature sensor 730 or the second temperature sensor 740 outputs the first signal or the second signal to the controller 720, and the controller 720 controls a plurality of first nozzles 250 or a plurality of second nozzles 350 to spray dry ice, automatically for the first adsorption bed 240 or The temperature of the second adsorption bed 340 is rapidly lowered to avoid spontaneous combustion damage of the first adsorption bed 240 and the second adsorption bed 340 .
如图2所示，所述第一吸附进气管110和第二吸附进气管120分别第一吸附阀111和第二吸附阀121，所述第一吸附出气管210和第二吸附出气管310分别设有第三吸附阀211和第四吸附阀311；第一脱附进气管220和第二脱附进气管320分别设有第一脱附阀221和第二脱附阀321，所述第一脱附出气管230和第二脱附出气管330分别设有第三脱附阀231和第四脱附阀331。具体工作时，第一处理塔200和第二处理塔300交替进行吸附和脱附，这样可以提高废气进化的连续性。第一处理塔200吸附和第二处理塔300脱附时，第一吸附阀111和第三吸附阀211打开，第二吸附阀121和第四吸附阀311关闭，第一脱附阀221和第三脱附阀231关闭，第二脱附阀321和第四脱附阀331打开。各个阀门之间采用plc自动控制，自动化程度较高。As shown in Figure 2, the first adsorption inlet pipe 110 and the second adsorption inlet pipe 120 are respectively the first adsorption valve 111 and the second adsorption valve 121, and the first adsorption outlet pipe 210 and the second adsorption outlet pipe 310 are respectively A third adsorption valve 211 and a fourth adsorption valve 311 are provided; the first desorption inlet pipe 220 and the second desorption inlet pipe 320 are respectively provided with a first desorption valve 221 and a second desorption valve 321, the first The desorption outlet pipe 230 and the second desorption outlet pipe 330 are respectively provided with a third desorption valve 231 and a fourth desorption valve 331 . During specific work, the first treatment tower 200 and the second treatment tower 300 alternately perform adsorption and desorption, which can improve the continuity of exhaust gas evolution. When the first treatment tower 200 is adsorbed and the second treatment tower 300 is desorbed, the first adsorption valve 111 and the third adsorption valve 211 are opened, the second adsorption valve 121 and the fourth adsorption valve 311 are closed, and the first desorption valve 221 and the second adsorption valve 221 are closed. The third desorption valve 231 is closed, and the second desorption valve 321 and the fourth desorption valve 331 are opened. Each valve is automatically controlled by PLC, with a high degree of automation.
如图1所示，在第一处理塔200和第二处理塔300的外面还设有用于制造氮气的制氮机组750，所述制氮机组750设有输氮管751分别连通第一脱附进气管220和第二脱附进气管320。具体地，在第一处理塔200或第二处理塔300脱附过程时，间歇向其注入97%氮气，脱附程序完毕后向第一处理塔200或者第二处理塔300注入97%氮气，避免第一吸附床240和第二吸附床340由于活性炭自身蓄热自燃。As shown in Figure 1, a nitrogen generator unit 750 for producing nitrogen is also provided outside the first treatment tower 200 and the second treatment tower 300, and the nitrogen generator unit 750 is provided with nitrogen delivery pipes 751 respectively connected to the first desorption The intake pipe 220 and the second desorption intake pipe 320 . Specifically, during the desorption process of the first treatment tower 200 or the second treatment tower 300, intermittently inject 97% nitrogen into it, and inject 97% nitrogen into the first treatment tower 200 or the second treatment tower 300 after the desorption procedure is completed, Avoid spontaneous combustion of the first adsorption bed 240 and the second adsorption bed 340 due to heat storage by the activated carbon itself.
如图1和图3所示，所述燃烧室400内的催化床420将燃烧室400分隔成上层的燃烧空间401和下层的加热空间402，催化床420由耐高温的陶瓷材料制得，催化床420上附着有金属钯、铂作催化剂，对有机物的催化燃烧率达97%以上，且催化剂寿命长，分解温度低，脱附预热时间短，能耗较低。As shown in Figures 1 and 3, the catalytic bed 420 in the combustion chamber 400 divides the combustion chamber 400 into an upper combustion space 401 and a lower heating space 402, and the catalytic bed 420 is made of a high-temperature resistant ceramic material. Metal palladium and platinum are attached to the bed 420 as catalysts, and the catalytic combustion rate of organic matter is over 97%, and the catalyst has a long service life, low decomposition temperature, short desorption preheating time, and low energy consumption.
所述排气管410连通燃烧空间401，所述燃烧空间401内设有第一预热管431和第二预热管432分别连通第一脱附出气管230和第二脱附出气管330，所述第一预热管431和第二预热管432分别远离第一脱附出气管230和第二脱附出气管330的一端位于加热空间402，所述加热空间402内设有加热管440，这里采用电阻丝加热。具体地，脱附后的有机物进入到加热空间402后，加热管440对其加热以使其达到反应温度，方便有机物在催化床420上分解和燃烧。燃烧空间401内设有第一预热管431和第二预热管432，第一预热管431和第二预热管432呈S型，可以对有机物进行预热，减少加热管440使用过多的电能。The exhaust pipe 410 communicates with the combustion space 401, and the combustion space 401 is provided with a first preheating pipe 431 and a second preheating pipe 432 respectively connected with the first desorption outlet pipe 230 and the second desorption outlet pipe 330, One end of the first preheating pipe 431 and the second preheating pipe 432 away from the first desorption gas outlet pipe 230 and the second desorption gas outlet pipe 330 is respectively located in the heating space 402, and the heating space 402 is provided with a heating pipe 440 , where resistance wire heating is used. Specifically, after the desorbed organic matter enters the heating space 402 , the heating tube 440 heats it to reach the reaction temperature, so that the organic matter can be decomposed and burned on the catalytic bed 420 . The combustion space 401 is provided with a first preheating pipe 431 and a second preheating pipe 432. The first preheating pipe 431 and the second preheating pipe 432 are S-shaped, which can preheat the organic matter and reduce the use of the heating pipe 440. Much electricity.
优选地，所述排气管410设有防火阀450，当出现高温时，防火阀450自动关机，避免设备损坏。Preferably, the exhaust pipe 410 is provided with a fire damper 450, and when high temperature occurs, the fire damper 450 will automatically shut down to avoid equipment damage.
优选地，结合图5，脱附出来的污染物主要在催化床420内进行转化反应，燃烧室400需要承受一定的温度和压力，为避免温度和压力在某时段局部升高造成的破坏性影响，所述燃烧室400设有泄爆门460，所述燃烧室400内设有压强传感器461与泄爆门460电连接，当压强传感器461检测到燃烧室400内的压强大于预先设定值时，所述泄爆门460启动为燃烧室400泄压，避免压力过高产生爆炸。Preferably, referring to FIG. 5 , the desorbed pollutants are mainly transformed in the catalytic bed 420, and the combustion chamber 400 needs to withstand a certain temperature and pressure. , the combustion chamber 400 is provided with an explosion vent door 460, and the combustion chamber 400 is provided with a pressure sensor 461 electrically connected to the explosion vent door 460. When the pressure sensor 461 detects that the pressure in the combustion chamber 400 is higher than the preset value , the explosion relief valve 460 is activated to relieve the pressure of the combustion chamber 400, so as to avoid explosion caused by excessive pressure.
优选地，所述第一排气支管621设有第二排气支管622分别连通第一脱附进气管220和第二脱附进气管320，所述第二排气支管622上设有排气阀门623。燃烧室400燃烧有机物产生的带有热量的二氧化碳和水分一部分经第一排气支管621排至烟囱500，另一部分经第二排气支管622进入第一处理塔200或者第二处理塔300为脱附过程提供反应热量，加快脱附的速率。Preferably, the first exhaust branch pipe 621 is provided with a second exhaust branch pipe 622 respectively communicating with the first desorption intake pipe 220 and the second desorption intake pipe 320, and the second exhaust branch pipe 622 is provided with an exhaust Valve 623. Part of the carbon dioxide and water with heat produced by the combustion of organic matter in the combustion chamber 400 is discharged to the chimney 500 through the first exhaust branch pipe 621, and the other part enters the first treatment tower 200 or the second treatment tower 300 through the second exhaust branch pipe 622 for degassing. The adsorption process provides heat of reaction and accelerates the rate of desorption.
优选地，所述第一排气支管621上设有混流换热器760，所述混流换热器760的换热管与第一支管连通，所述混流换热器760的进气端连通有补冷分机761，所述混流换热器760的出气端与第二排气支管622连通。具体工作时，冷风机为脱附过程提供空气，第一排气支管621上设有混流换热器760，可以充分利用第一排气支管621内的余温，对进入第一处理塔200或者第二处理塔300的空气进行简单预热，为脱附过程提供反应热量，加快脱附的速率。结合图4，这里的冷风机与控制器720电连接，当第一处理塔200或者第二处理塔300内的温度到达一个预先设定值时，冷风机可以加大风力为第一处理塔200或者第二处理塔300降温。Preferably, the first exhaust branch pipe 621 is provided with a mixed flow heat exchanger 760, the heat exchange tube of the mixed flow heat exchanger 760 communicates with the first branch pipe, and the inlet end of the mixed flow heat exchanger 760 communicates with The supplementary cooling sub-unit 761 , the gas outlet end of the mixed flow heat exchanger 760 communicates with the second exhaust branch pipe 622 . During specific work, the air cooler provides air for the desorption process, and the first exhaust branch pipe 621 is provided with a mixed-flow heat exchanger 760, which can make full use of the residual temperature in the first exhaust branch pipe 621, and is suitable for entering the first treatment tower 200 or The air in the second treatment tower 300 is simply preheated to provide reaction heat for the desorption process and speed up the desorption rate. 4, the air cooler here is electrically connected to the controller 720, and when the temperature in the first processing tower 200 or the second processing tower 300 reaches a preset value, the air cooler can increase the wind power for the first processing tower 200. Or the temperature of the second treatment tower 300 is lowered.
如1所示，烟囱500的设有排气风机510，排气风机510的进气端与吸附分机的出风口和第一排气支管621连通，排气风机510可以为装置排出净化后的废气提供动力，方便气体流通。As shown in 1, the chimney 500 is provided with an exhaust fan 510, and the inlet end of the exhaust fan 510 is connected with the air outlet of the adsorption sub-unit and the first exhaust branch pipe 621, and the exhaust fan 510 can discharge purified waste gas for the device Provide power and facilitate gas circulation.
综上所述，本实用新型采用吸附浓缩和催化燃烧组合工艺，整个装置实现了净化、脱附过程封闭循环，与回收类有机废气净化装置相比，无须配备压缩空气等附加能源，运行过程不产生二次污染，设备投资及运行费用低。To sum up, the utility model adopts the combination process of adsorption concentration and catalytic combustion, and the whole device realizes the closed cycle of purification and desorption process. Compared with the recycling organic waste gas purification device, it does not need to be equipped with additional energy such as compressed air, and the operation process is easy. Produce secondary pollution, low equipment investment and operating costs.
上述实施例为本实用新型较佳的实现方案，除此之外，本实用新型还可以其它方式实现，在不脱离本技术方案构思的前提下任何显而易见的替换均在本实用新型的保护范围之内。The above-mentioned embodiment is a preferred implementation of the utility model. In addition, the utility model can also be realized in other ways. Any obvious replacement is within the scope of protection of the utility model without departing from the concept of the technical solution. Inside.
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| CN112325316A (en) * | 2020-11-03 | 2021-02-05 | 邯郸群山环保科技有限公司 | Catalytic combustion device for waste gas treatment |
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| CN111013324A (en) * | 2019-12-30 | 2020-04-17 | 苏州艾特斯环保设备有限公司 | Concentration method of organic waste gas |
| CN112325316A (en) * | 2020-11-03 | 2021-02-05 | 邯郸群山环保科技有限公司 | Catalytic combustion device for waste gas treatment |
| CN112325316B (en) * | 2020-11-03 | 2022-11-29 | 邯郸群山环保科技有限公司 | Catalytic combustion device for waste gas treatment |
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