CN104107618A - Low-concentration large-air-volume waste gas concentration and wind reduction system - Google Patents
Low-concentration large-air-volume waste gas concentration and wind reduction system Download PDFInfo
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- CN104107618A CN104107618A CN201410385346.8A CN201410385346A CN104107618A CN 104107618 A CN104107618 A CN 104107618A CN 201410385346 A CN201410385346 A CN 201410385346A CN 104107618 A CN104107618 A CN 104107618A
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Abstract
The invention discloses a low-concentration large-air-volume waste gas concentration and wind reduction system. The system is provided with a waste gas pretreatment unit, an adsorption and concentration unit, a desorption and cooling unit and a control unit, wherein the waste gas pretreatment unit comprises a gas charging electromagnetic valve, a gas charging fan, a filter and a cooler which are communicated sequentially; the adsorption and concentration unit comprises a driving motor, a belt, a three-way connecting pipe and a zeolite rotating wheel which is made from a molecular sieve, wherein the driving motor is electrically connected with the control unit and connected with the zeolite rotating wheel through the belt; the inside of the zeolite rotating wheel is of a honeycomb structure which is divided into three regions which are respectively an adsorption region, a regeneration region and a cooling region; the adsorption and concentration unit and the desorption and cooling unit are connected in series and also connected in parallel with a second adsorption and concentration unit and a second desorption and cooling unit. The system disclosed by the invention has the advantages of low treatment cost, good desorption effect, high efficiency, simple equipment and small size.
Description
Technical field
The present invention relates to waste gas treatment equipment technical field, relate in particular to a kind of low concentration Wind Volume waste gas and concentrate and checking system.
Background technology
The VOCs of low concentration, Wind Volume is emitted in the Organic Waste Gas Pollution of current China and has accounted for very large ratio, and Adsorption Concentration technology is the most cost-effective technological approaches during low concentration gas is administered.But of a great variety, complicated component, the character of VOCs are different, adopt under many circumstances a kind of purification techniques to be often difficult to reach improvement requirement, nor economical.Utilize the advantage of different units improvement technology, adopt combined treatment technique, not only can meet emission request, and can reduce the operating cost of cleaning equipment.Therefore,, in VOCs treatment, adopt the group technology of two or more purification techniques to obtain in recent years developing rapidly.Zeolite runner Adsorption Concentration technology is exactly a kind of new technology growing up for the improvement of low concentration VOCs, combine with incineration technology (catalytic combustion or high temperature incineration) or condensation technology, formed " zeolite runner Adsorption Concentration+incineration technology " and " zeolite runner Adsorption Concentration+condensation recovery technology ".
In industrial waste gas, contain multiple high boiling substance, polymeric material, and contain certain solid particle, desorption shortage of heat, solid particle stops up duct, and polymer occupies adsorption potential and is difficult to desorption, causes zeolite inactivation, affects adsorption efficiency.
United States Patent (USP) 4957721 grades make improvements, and will after the zeolite runner dismounting of inactivation, use high temperature desorption, but disassembly procedure are numerous and diverse, fragile, the deteriorated pulverizing of zeolite.
Zeolite runner is applicable to Wind Volume at present, the exhaust-gas treatment of low concentration, but zeolite runner all exists cocnentration factor not high, after concentrated, in waste gas, VOCs concentration is not enough, cause its burning and be not enough to supply heat or maintain burning, need to add a large amount of auxiliary fuels, running cost is high.
Summary of the invention
The object of the invention is to for the problems referred to above weak point, provide low concentration Wind Volume waste gas to concentrate and checking system, there is disposal cost low, the advantage that desorption effect is good, efficiency is high, equipment is simple, volume is little.
In order to achieve the above object, the present invention is by the following technical solutions:
Low concentration Wind Volume waste gas concentrates and checking system, and it is provided with waste gas pretreatment unit, Adsorption Concentration unit, desorption cooling unit and control module; Described waste gas pretreatment unit comprises air inlet electromagnetic valve, ventilating fan, filter and the cooler being communicated with successively; Described Adsorption Concentration unit comprises drive motors, belt, three-limb tube, the zeolite runner of being made by molecular sieve, and described drive motors and described control module are electrically connected, and described drive motors is connected with described zeolite runner by belt; Described zeolite runner inside is honeycomb, and this honeycomb is divided into San Ge district, is respectively adsorption zone, renewing zone and cooling zone; Described three-limb tube is provided with three ports, be respectively the first air inlet port, first port and second port of giving vent to anger of giving vent to anger, described the first air inlet port is communicated with described cooler, described first port adsorption zone one end face set with described zeolite runner of giving vent to anger is communicated with, described second port of giving vent to anger is communicated with described renewing zone one end face, and described desorption cooling unit comprises that regeneration gas goes out pipe, heater, hot regeneration gas inlet pipe, escape pipe, exhaust blower; The renewing zone other end set with described zeolite runner, described regeneration tracheae one end is communicated with, the other end of described regeneration tracheae is communicated with described heater, described heat regeneration tracheae one end is communicated with cooling zone one end face of described zeolite runner, the described heat regeneration tracheae other end is communicated with the described heater other end, and described escape pipe is connected between described zeolite runner other end, set cooling zone and described exhaust blower; Described control module is all electrically connected at described air inlet electromagnetic valve, exhaust blower.
Further, described second port renewing zone one end face set with described zeolite runner of giving vent to anger is communicated with by the first branched pipe 14.
The present invention also comprises the second Adsorption Concentration unit, the second desorption cooling unit and exhaust unit, described exhaust unit comprises blast pipe one, blast pipe two and the 5th magnetic valve, and described the 5th magnetic valve is connected between described blast pipe one and blast pipe two, and the described blast pipe other end is communicated with the adsorption zone other end of described zeolite runner, described the second Adsorption Concentration unit comprises the first three-limb tube, the second three-limb tube, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the second zeolite runner, the second belt, the second drive motors, described the second drive motors and described control module are electrically connected, and described the second drive motors is connected with described the second zeolite runner by the second belt, described the second zeolite runner inside is provided with second honeycomb of being made by molecular sieve, this second honeycomb is San Ge district respectively, be respectively the second adsorption zone, the second renewing zone and the second cooling zone, described the second three-limb tube is provided with three ports, be respectively the second air inlet port, the 3rd port and the 4th port of giving vent to anger of giving vent to anger, described the first magnetic valve is connected to the described the 3rd and gives vent to anger between port and described the first air inlet port, and described the second air inlet port is connected with described cooler, described the 3rd three-limb tube is provided with three ports, be respectively the 3rd air inlet port, the 5th port and the 6th port of giving vent to anger of giving vent to anger, described the second magnetic valve is located at the described the 4th and is given vent to anger between port and described the 3rd air inlet port, the described the 6th port adsorption zone one end face set with described the second zeolite runner of giving vent to anger is communicated with, and the described the 5th port of giving vent to anger is communicated with described blast pipe one by the 4th magnetic valve, described the second adsorption cooling unit comprises the second regeneration escape pipe, secondary heater, the second hot regeneration gas inlet pipe, the second escape pipe, branched pipe, , the described the 6th port adsorption zone one end face set with described the second zeolite runner of giving vent to anger is communicated with, described the 3rd magnetic valve is located at the described the 6th and is given vent to anger between port and described branched pipe one end, the described branched pipe other end second regeneration trivial one end face set with described the second zeolite runner is communicated with, described the second regeneration gas goes out pipe and is connected to the connection of the set adsorption zone of described the second zeolite runner other end, described secondary heater is connected between described the second regeneration escape pipe and described the second hot regeneration gas inlet pipe, the described second hot regeneration gas inlet pipe other end is communicated with the set cooling zone of described zeolite runner one end face, described the second escape pipe is connected between described the second zeolite runner set other end, cooling zone and described escape pipe.
Described zeolite runner and described first is given vent to anger and between port, is connected with the first flow-limiting valve.
The first temperature sensor is installed on described heater, and described temperature sensor and described control module are electrically connected.
Further, described heater is steam-type heater or is electric heater; Described secondary heater is steam-type heater or is electric heater.If described heater or secondary heater are electric heater, so described heater and control module are electrically connected, or described secondary heater and the electric connection of described control module.
Further, the present invention also includes two temperature sensors, is located at respectively heater and secondary heater place, and in order to monitoring temperature, described temperature sensor and described control module are electrically connected.
Operating procedure
One, parallel operation, is applicable to Wind Volume process
1, waste gas preprocessing process
By control module, open air inlet electromagnetic valve 1, the first magnetic valve 5, the second magnetic valve 8, the 5th magnetic valve 9, close the 4th magnetic valve 10.Start ventilating fan 2.Ventilating fan 2 carries out dust removal by filtration 3 by the filter 3 of first flowing through from the waste gas containing volatile organic solvent of workshop discharge, then sends into cooler 4, the processing of lowering the temperature.
2, Adsorption Concentration process
Waste gas through cooling, enters the adsorption zone 6a of zeolite runner 6 and the second adsorption zone 11a of the second zeolite runner 11 by parallel pipeline, and the clean gas after absorption causes smoke stack emission through blast pipe one and the second escape pipe.Utilize drive motors and the second drive motors make zeolite runner and the second zeolite runner in due course between interval with the rotation of stepping or continuation mode, make to need honeycomb and second honeycomb of regeneration to enter desorption and regeneration district 6c and the second desorption district 11c.
3, desorption cooling procedure
Open exhaust blower 13, open sequencing valve 14,15, extension waste gas is as desorption gas, and its flow is the 1/10-1/20 of main line flow.Part waste gas is first through cooling zone 6b, and 11b, makes zeolite cooling, and heating by the exhaust gases is opened heater 7,12, and the waste gas of preheating is warming up to 180-280 ℃.High-temp waste gas enters regeneration desorption district 6c, and 11c makes the organic matter desorption of zeolite adsorption.Gas after desorption enters post processing.
Two, serial operation, is applicable to provide the process of highly enriched ratio
1, waste gas preprocessing process
Open sequencing valve 1,5,10, valve-off 8,9.Start air-introduced machine 2.Air-introduced machine will first pass through dust removal by filtration 3 from the waste gas containing volatile organic solvent of workshop discharge, then sends into surface cooler 4, the processing of lowering the temperature.
2, Adsorption Concentration process
Through the waste gas of cooling, by pipeline, entered the adsorption zone 6a of zeolite runner 6, after absorption, gas is entering the adsorption zone 11a of zeolite runner 11.Clean gas causes smoke stack emission through pipeline.Utilize driven unit make runner in due course between interval with the rotation of stepping or continuation mode, make to need the runner of regeneration to enter desorption and regeneration district 6c, 11c.
3, desorption cooling procedure
Open air-introduced machine 13, open the first branched pipe 14 and branched pipe 15, extension waste gas is as desorption gas, and its flow is the 1/10-1/20 of main line flow.Part waste gas is first through cooling zone 6b, and the second cooling zone 11b, makes zeolite cooling, and heating by the exhaust gases is opened heater 7, secondary heater 12, and the waste gas of preheating is warming up to 180-280 ℃.High-temp waste gas enters regeneration desorption district 6c, and the second desorption district 11c makes the organic matter desorption of zeolite adsorption.Gas after desorption enters post processing.
The present invention adopts said structure, has disposal cost low, the advantage that desorption effect is good, efficiency is high, equipment is simple, volume is little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
By the drawings and specific embodiments, come below that the invention will be further described.
The specific embodiment
As shown in Figure 1, low concentration Wind Volume waste gas of the present invention concentrates and checking system, its waste gas pretreatment unit, Adsorption Concentration unit, desorption cooling unit and control module; Described waste gas pretreatment unit comprises air inlet electromagnetic valve 1, ventilating fan 2, filter 3 and the cooler 4 being communicated with successively; Described Adsorption Concentration unit comprises drive motors, belt, three-limb tube, the zeolite runner 6 of being made by molecular sieve, and described drive motors and described control module are electrically connected, and described drive motors is connected with described zeolite runner 6 by belt; Described zeolite runner 6 inside are honeycomb, and this honeycomb is divided into San Ge district, are respectively adsorption zone 6a, 6cHe cooling zone, renewing zone 6b; Described three-limb tube is provided with three ports, be respectively the first air inlet port, first port and second port of giving vent to anger of giving vent to anger, described the first air inlet port is communicated with described cooler 4, described first port adsorption zone 6a mono-end face set with described zeolite runner 6 of giving vent to anger is communicated with, described second port of giving vent to anger is communicated with described renewing zone 6c mono-end face, and described desorption cooling unit comprises that regeneration gas goes out pipe, heater 7, hot regeneration gas inlet pipe, escape pipe, exhaust blower 13; The renewing zone 6c other end set with described zeolite runner 6, described regeneration tracheae one end is communicated with, the other end of described regeneration tracheae is communicated with described heater 7, described heat regeneration tracheae one end is communicated with cooling zone 6b mono-end face of described zeolite runner 6, the described heat regeneration tracheae other end is communicated with described heater 7 other ends, and described escape pipe is connected between described zeolite runner 6 6b other end, set cooling zone and described exhaust blower 13; Described control module is all electrically connected at described air inlet electromagnetic valve 1, exhaust blower 13.
Further, described second port renewing zone 6c mono-end face set with described zeolite runner 6 of giving vent to anger is communicated with by the first branched pipe 14.
The present invention also comprises the second Adsorption Concentration unit, the second desorption cooling unit and exhaust unit, described exhaust unit comprises blast pipe one, blast pipe two and the 5th magnetic valve 9, and described the 5th magnetic valve is connected between described blast pipe one and blast pipe two, and the described blast pipe other end is communicated with the adsorption zone 6a other end of described zeolite runner 6, described the second Adsorption Concentration unit comprises the first three-limb tube, the second three-limb tube, the first magnetic valve 5, the second magnetic valve 8, the 3rd magnetic valve 15, the second zeolite runner 11, the second belt, the second drive motors, described the second drive motors and described control module are electrically connected, and described the second drive motors is connected with described the second zeolite runner 11 by the second belt, described the second zeolite runner 11 inside are provided with second honeycomb of being made by molecular sieve, this second honeycomb is San Ge district respectively, be respectively the second adsorption zone 11a, the second renewing zone 11c and the second cooling zone 11b, described the second three-limb tube is provided with three ports, be respectively the second air inlet port, the 3rd port and the 4th port of giving vent to anger of giving vent to anger, described the first magnetic valve 5 is connected to the described the 3rd and gives vent to anger between port and described the first air inlet port, and described the second air inlet port is connected with described cooler 4, described the 3rd three-limb tube is provided with three ports, be respectively the 3rd air inlet port, the 5th port and the 6th port of giving vent to anger of giving vent to anger, described the second magnetic valve 8 is located at the described the 4th and is given vent to anger between port and described the 3rd air inlet port, the described the 6th port adsorption zone 11a mono-end face set with described the second zeolite runner 11 of giving vent to anger is communicated with, and the described the 5th port of giving vent to anger is communicated with described blast pipe one by the 4th magnetic valve 10, described the second adsorption cooling unit comprises the second regeneration escape pipe, secondary heater 12, the second hot regeneration gas inlet pipe, the second escape pipe, branched pipe, , the described the 6th port adsorption zone 11a mono-end face set with described the second zeolite runner 6 of giving vent to anger is communicated with, described the 3rd magnetic valve 15 is located at the described the 6th and is given vent to anger between port and described branched pipe one end, the described branched pipe other end second regeneration trivial one end face set with described the second zeolite runner 11 is communicated with, described the second regeneration gas goes out pipe and is connected to the connection of the set adsorption zone 11a of described the second zeolite runner 11 other end, described secondary heater 12 is connected between described the second regeneration escape pipe and described the second hot regeneration gas inlet pipe, the described second hot regeneration gas inlet pipe other end is communicated with set cooling zone 11b mono-end face of described zeolite runner 11, described the second escape pipe is connected between described the second zeolite runner 11 set 11c other end, cooling zone and described escape pipe.
Described zeolite runner 6 and described first is given vent to anger and between port, is connected with the first flow-limiting valve.
On described heater 7, the first temperature sensor is installed, described temperature sensor and described control module are electrically connected.
Further, described heater 7 is steam-type heater or is electric heater; Described secondary heater 12 is steam-type heater or is electric heater.If described heater 7 or secondary heater 12 are electric heater, so described heater 7 is electrically connected with control module, or described secondary heater 12 is electrically connected with described control module.
Further, the present invention also includes two temperature sensors, is located at respectively heater and secondary heater place, and in order to monitoring temperature, described temperature sensor and described control module are electrically connected.
Operating procedure
One, parallel operation, is applicable to Wind Volume process
1, waste gas preprocessing process
By control module, open air inlet electromagnetic valve 1, the first magnetic valve 5, the second magnetic valve 8, the 5th magnetic valve 9, close the 4th magnetic valve 10.Start ventilating fan 2.Ventilating fan 2 carries out dust removal by filtration 3 by the filter 3 of first flowing through from the waste gas containing volatile organic solvent of workshop discharge, then sends into cooler 4, the processing of lowering the temperature.
2, Adsorption Concentration process
Waste gas through cooling, enters the adsorption zone 6a of zeolite runner 6 and the second adsorption zone 11a of the second zeolite runner 11 by parallel pipeline, and the clean gas after absorption causes smoke stack emission through blast pipe one and the second escape pipe.Utilize drive motors and the second drive motors make zeolite runner and the second zeolite runner in due course between interval with the rotation of stepping or continuation mode, make to need honeycomb and second honeycomb of regeneration to enter desorption and regeneration district 6c and the second desorption district 11c.
3, desorption cooling procedure
Open exhaust blower 13, open sequencing valve 14,15, extension waste gas is as desorption gas, and its flow is the 1/10-1/20 of main line flow.Part waste gas is first through cooling zone 6b, and 11b, makes zeolite cooling, and heating by the exhaust gases is opened heater 7,12, and the waste gas of preheating is warming up to 180-280 ℃.High-temp waste gas enters regeneration desorption district 6c, and 11c makes the organic matter desorption of zeolite adsorption.Gas after desorption enters post processing.
Two, serial operation, is applicable to provide the process of highly enriched ratio
1, waste gas preprocessing process
Open sequencing valve 1,5,10, valve-off 8,9.Start air-introduced machine 2.Air-introduced machine will first pass through dust removal by filtration 3 from the waste gas containing volatile organic solvent of workshop discharge, then sends into surface cooler 4, the processing of lowering the temperature.
2, Adsorption Concentration process
Through the waste gas of cooling, by pipeline, entered the adsorption zone 6a of zeolite runner 6, after absorption, gas is entering the adsorption zone 11a of zeolite runner 11.Clean gas causes smoke stack emission through pipeline.Utilize driven unit make runner in due course between interval with the rotation of stepping or continuation mode, make to need the runner of regeneration to enter desorption and regeneration district 6c, 11c.
3, desorption cooling procedure
Open air-introduced machine 13, open the first branched pipe 14 and branched pipe 15, extension waste gas is as desorption gas, and its flow is the 1/10-1/20 of main line flow.Part waste gas is first through cooling zone 6b, and the second cooling zone 11b, makes zeolite cooling, and heating by the exhaust gases is opened heater 7, secondary heater 12, and the waste gas of preheating is warming up to 180-280 ℃.High-temp waste gas enters regeneration desorption district 6c, and the second desorption district 11c makes the organic matter desorption of zeolite adsorption.Gas after desorption enters post processing.
The present invention adopts said structure, has disposal cost low, the advantage that desorption effect is good, efficiency is high, equipment is simple, volume is little.
More than illustrate and unrestricted technical scheme of the present invention, every technology that does not depart from spirit of the present invention, all belongs within the scope of claim of the present invention.
Claims (4)
1. low concentration Wind Volume waste gas concentrates and checking system, it is characterized in that: be provided with waste gas pretreatment unit, Adsorption Concentration unit, desorption cooling unit and control module; Described waste gas pretreatment unit comprises air inlet electromagnetic valve, ventilating fan, filter and the cooler being communicated with successively; Described Adsorption Concentration unit comprises drive motors, belt, three-limb tube, the zeolite runner of being made by molecular sieve, and described drive motors and described control module are electrically connected, and described drive motors is connected with described zeolite runner by belt; Described zeolite runner inside is honeycomb, and this honeycomb is divided into San Ge district, is respectively adsorption zone, renewing zone and cooling zone; Described three-limb tube is provided with three ports, be respectively the first air inlet port, first port and second port of giving vent to anger of giving vent to anger, described the first air inlet port is communicated with described cooler, described first port adsorption zone one end face set with described zeolite runner of giving vent to anger is communicated with, described second port of giving vent to anger is communicated with described renewing zone one end face, and described desorption cooling unit comprises that regeneration gas goes out pipe, heater, hot regeneration gas inlet pipe, escape pipe, exhaust blower; The renewing zone other end set with described zeolite runner, described regeneration tracheae one end is communicated with, the other end of described regeneration tracheae is communicated with described heater, described heat regeneration tracheae one end is communicated with cooling zone one end face of described zeolite runner, the described heat regeneration tracheae other end is communicated with the described heater other end, and described escape pipe is connected between described zeolite runner other end, set cooling zone and described exhaust blower; Described control module is all electrically connected at described air inlet electromagnetic valve, exhaust blower.
2. low concentration Wind Volume waste gas concentrates and checking system according to claim 1, it is characterized in that: also comprise the second Adsorption Concentration unit, the second desorption cooling unit and exhaust unit, described exhaust unit comprises blast pipe one, blast pipe two and the 5th magnetic valve, and described the 5th magnetic valve is connected between described blast pipe one and blast pipe two, and the described blast pipe other end is communicated with the adsorption zone other end of described zeolite runner, described the second Adsorption Concentration unit comprises the first three-limb tube, the second three-limb tube, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the second zeolite runner, the second belt, the second drive motors, described the second drive motors and described control module are electrically connected, and described the second drive motors is connected with described the second zeolite runner by the second belt, described the second zeolite runner inside is provided with second honeycomb of being made by molecular sieve, this second honeycomb is San Ge district respectively, be respectively the second adsorption zone, the second renewing zone and the second cooling zone, described the second three-limb tube is provided with three ports, be respectively the second air inlet port, the 3rd port and the 4th port of giving vent to anger of giving vent to anger, described the first magnetic valve is connected to the described the 3rd and gives vent to anger between port and described the first air inlet port, and described the second air inlet port is connected with described cooler, described the 3rd three-limb tube is provided with three ports, be respectively the 3rd air inlet port, the 5th port and the 6th port of giving vent to anger of giving vent to anger, described the second magnetic valve is located at the described the 4th and is given vent to anger between port and described the 3rd air inlet port, the described the 6th port adsorption zone one end face set with described the second zeolite runner of giving vent to anger is communicated with, and the described the 5th port of giving vent to anger is communicated with described blast pipe one by the 4th magnetic valve, described the second adsorption cooling unit comprises the second regeneration escape pipe, secondary heater, the second hot regeneration gas inlet pipe, the second escape pipe, branched pipe, , the described the 6th port adsorption zone one end face set with described the second zeolite runner of giving vent to anger is communicated with, described the 3rd magnetic valve is located at the described the 6th and is given vent to anger between port and described branched pipe one end, the described branched pipe other end second regeneration trivial one end face set with described the second zeolite runner is communicated with, described the second regeneration gas goes out pipe and is connected to the connection of the set adsorption zone of described the second zeolite runner other end, described secondary heater is connected between described the second regeneration escape pipe and described the second hot regeneration gas inlet pipe, the described second hot regeneration gas inlet pipe other end is communicated with the set cooling zone of described zeolite runner one end face, described the second escape pipe is connected between described the second zeolite runner set other end, cooling zone and described escape pipe.
3. the concentrated and checking system of low concentration Wind Volume waste gas according to claim 1, is characterized in that: described zeolite runner and described first is given vent to anger and between port, is connected with the first flow-limiting valve.
4. low concentration Wind Volume waste gas concentrates and checking system according to claim 1, it is characterized in that: the first temperature sensor is installed on described heater, and described temperature sensor and described control module are electrically connected.
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