CN109404935A - VOCs heat accumulating type catalytic combustion afterheat utilizing system - Google Patents
VOCs heat accumulating type catalytic combustion afterheat utilizing system Download PDFInfo
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- CN109404935A CN109404935A CN201811017429.6A CN201811017429A CN109404935A CN 109404935 A CN109404935 A CN 109404935A CN 201811017429 A CN201811017429 A CN 201811017429A CN 109404935 A CN109404935 A CN 109404935A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/60—Separating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50213—Preheating processes other than drying or pyrolysis
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Incineration Of Waste (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The present invention discloses a kind of VOCs heat accumulating type catalytic combustion afterheat utilizing system, it include: drying production room, first heat exchange unit and heat accumulating type catalytic combustion unit, one end of drying production room is equipped with drying gas access, the other end is equipped with VOCs gas collection port, first heat exchange unit is equipped with high temperature purification gas access, medium temperature purified gas outlet, cold VOCs gas entrance and the outlet of hot VOCs gas, cold VOCs gas entrance and is connected by pipeline with VOC gas sampling mouth；Heat accumulating type catalytic combustion unit includes hot VOCs gas entrance and high temperature purification gas vent, hot VOCs gas entrance is connected by pipeline with the outlet of the hot VOCs gas of the first heat exchange unit, high temperature purification gas vent is connected by pipeline with the high temperature purification gas access of the first heat exchange unit, so that the high temperature purification gas generated after catalysis burning VOCs gas enters the first heat exchange unit and cold VOCs gas carries out heat exchange.
Description
Technical field
The present invention relates to a kind of afterheat utilizing system, in particular to a kind of VOCs gas burner exhaust heat utilizes system.
Background technique
VOC (Volatile Organic Compound) refers to the general name of volatile organic compounds under room temperature, and VOC is useless
Containing formaldehyde, dimethylbenzene, toluene, acetone, butanone, halogen compounds etc. in gas, in petrochemical industry, pharmacy, paint, coating, electricity
It can be generated in production and use process in the industries such as sub- manufacture, surface anticorrosion, shoemaking, printing and communications and transportation a large amount of
VOC exhaust gas, those compound majorities have penetrating odor, not only cause strong influence to air quality, directly contact
It can cause damages to human health, and the inflammable feature of VOC exhaust gas also results in security risk.
Currently, VOCs gas has become various countries since discharge amount is big, type is more, difficult to degrade, strong toxicity, security risk are big
To the focus of air-treatment problem.In the prior art, handle VOC exhaust gas major technique have: catalysis burning, activated carbon adsorption,
Low-temperature plasma, ultraviolet light etc..Wherein, the optimal processing mode of VOC exhaust gas is to rely on VOC exhaust gas in combustion furnace
Own combustion is warm or burner is combustion-supporting to be warming up to 800 degrees Celsius or more, and the VOC in exhaust gas is made to resolve into CO2And water, then again
These gases are emitted into atmosphere.
A kind of Low Temperature Storage hot type catalysis oxidation as disclosed in Chinese patent application CN105066148A administers VOCs gas
Method, VOCs gas enter pretreatment system after VOCs high concentration recyclable device, and pretreated gas enters through blower to be changed
The hot cold journey of device, the gas of the cold journey outlet of heat exchanger enter heating room, and the gas of heated room heating sequentially enters low-temperature catalyzed oxygen
Change bed, high-temperature S removal bed, honeycomb ceramic heat accumulator, the gas of honeycomb ceramic heat accumulator outlet enters exchanger heat journey, changes
The gas of the hot hot journey outlet of device enters chimney；Online concentration analysis system and pretreatment system suction line, fan outlet pipeline,
The connected technical solution of exchanger heat journey outlet line preferably solves the above problem, can be used for administering in VOCs gas.So
And the method that the Low Temperature Storage hot type catalysis oxidation administers VOCs gas has the following disadvantages or insufficient: (1) needing low-temperature catalytic oxidation
Bed and high-temperature S removal bed need a large amount of extraneous thermal energy provided；(2) energy utilization of VOCs gas itself is not enough.
For another example a kind of heat accumulating type VOCs catalytic oxidizing equipment and technique disclosed in Chinese patent application CN106582262A, packet
Include catalytic oxidizing equipment, the catalytic oxidizing equipment include cabinet and the catalyst layer for being set to box house, recuperation layer and
Optionally temperature sensor is provided with organic exhaust gas air inlet, purification gas gas outlet on cabinet and cleans gas inlet；Have
Machine waste gas inlet is connected by valve with exhaust inlet pipe to be processed, and purification gas gas outlet is gone out by valve and purification gas
Tracheae is connected, and cleans gas inlet and is connected by valve with gas inlet pipe is cleaned；The heat accumulating type VOCs catalysis oxidation dress
Set the catalytic oxidizing equipment being interconnected including at least three by communication apparatus.However, the VOCs gas catalytic oxidizing equipment and
Technique has the following disadvantages or deficiency: (1) the waste heat energy after, not making full use of VOCs gas catalysis oxidation；(2), VOCs gas
There are security risk in catalytic oxidation process, the case where Yi Fasheng catalyst poisoning.
Therefore it provides a kind of can effectively decompose VOCs gas and the VOCs of VOCs gas catalytic combustion thermal energy is made full use of to store
Hot type, which is catalyzed burner exhaust heat, becomes urgent problem in the industry using system.
Summary of the invention
The object of the present invention is to provide a kind of VOCs heat accumulating type catalytic combustion afterheat utilizing systems, can make full use of
The thermal energy of the catalysis burning of VOCs gas, is not only completed effective decomposition of VOCs gas, and decomposes the heat of VOCs gas generation also
It exchanges heat and uses for VOCs gas itself, while it is indoor as drying production to carry out pre- thermosetting hot-air to cold air
Gas is dried to use.
To achieve the goals above, the present invention provides a kind of VOCs heat accumulating type catalytic combustion afterheat utilizing systems, comprising:
Drying production room, the first heat exchange unit and heat accumulating type catalytic combustion unit, wherein drying production room includes drying cavity, drying
One end of cavity is equipped with drying gas access, and the other end for drying cavity is equipped with VOCs gas collection port, and the first heat exchange unit is equipped with
High temperature purification gas access, medium temperature purified gas outlet, cold VOCs gas entrance and the outlet of hot VOCs gas, medium temperature purification gas
Outlet is connected with chimney, and cold VOCs gas entrance is connected by pipeline with the VOC gas sampling mouth of drying cavity, so that cold
VOCs gas enters the first heat exchange unit and carries out heat exchange type into hot VOCs gas；Heat accumulating type catalytic combustion unit includes that hot VOCs gas enters
Mouth and high temperature purification gas vent, wherein hot VOCs gas entrance exports phase by the hot VOCs gas of pipeline and the first heat exchange unit
Connection, high temperature purification gas vent are connected by pipeline with the high temperature purification gas access of the first heat exchange unit, so that catalysis
The high temperature purification gas generated after burning VOCs gas enters the first heat exchange unit and cold VOCs gas carries out heat exchange.
Wherein, the product coated with coating produces the indoor transmission with conveyer belt in drying, in the effect of drying gas
Under, coating is gradually oven-dried the paint film to be formed and be attached on product, the VOCs that the organic matter in coating is formed by drying volatilization
Gas is also gradually emitted from VOCs gas collection port.
It selectively, further include the filter being connected between drying production room and the first heat exchange unit, wherein filter
Equipped with filter inlet and filter outlet, filter inlet is connected by pipeline with the VOCs gas collection port of drying production room
It connects, filter outlet is connected will dry production room and produce by VOCs gas pipeline with the cold VOCs gas entrance of the first heat exchange unit
Particle in raw VOCs gas filters out and is delivered to the first heat exchange unit.
Selectively, the first heat exchange unit includes: outer housing, is sequentially arranged in outer housing along the transverse direction of outer housing
In chamber first in midfeather, first midfeather, second midfeather and second midfeather, be formed in outer housing
One side wall and the first first chamber between midfeather, when being formed in first between midfeather and first between midfeather first
Air-exchanging chamber, be formed in first interval chamber between midfeather and second between midfeather, be formed in second between midfeather and
The second chamber when two the second air-exchanging chambers between midfeather, another side wall for being formed in outer housing and second between midfeather
Room from the one side wall central horizontal of outer housing extends to the first diaphragm plate of the first side midfeather in first chamber, is set to
It is spaced in chamber and extends to the interval diaphragm plate of second midfeather from the central horizontal of first midfeather and set on second
The second diaphragm plate of another side wall of outer housing is extended in chamber from the second side midfeather central horizontal, wherein the first tabula
First chamber is divided into the first upper chamber and the first lower chamber by plate from top to bottom, and interval diaphragm plate will be spaced chamber from top to bottom
It is divided into interval upper chamber and second chamber is divided into the second upper chamber and the by interval lower chamber, the second diaphragm plate from top to bottom
Two lower chambers, the first air-exchanging chamber is interior to be equipped with the first plate-fin heat exchanger, is provided with the second plate-fin heat exchanger in the second air-exchanging chamber, cold
VOCs gas entrance is set to the lateral wall of the first upper chamber, and hot VOCs gas outlet is set to the lateral wall of the second upper chamber, high temperature purification
Gas access is set to the lateral wall of the second lower chamber, and medium temperature purified gas outlet is set to the lateral wall of the first lower chamber.
Selectively, the first plate-fin heat exchanger and the second plate-fin heat exchanger respectively include at least two rows of first fluid heat exchanger tubes
And at least two rows of second fluid heat exchanger tubes, wherein at least two rows of first fluid heat exchanger tubes and at least two rows of second fluid heat exchanger tubes
Stacking intersected with each other, often ranked first fluid heat transfer pipe and often ranked second fluid heat transfer pipe respectively include at least four band wing light pipes,
First plate-fin heat exchanger often ranked first fluid heat transfer pipe from the first side midfeather at the first upper chamber extend obliquely downward to
It is spaced first midfeather of lower chamber, the second plate-fin heat exchanger often ranked first fluid heat transfer pipe from the second of interval lower chamber
Between midfeather tilt upward the second side midfeather for extending to the second upper chamber, the fluid that often ranked second of the first plate-fin heat exchanger changes
Heat pipe tilts upward first midfeather for extending to interval upper chamber, the second plate from the first side midfeather at the first lower chamber
Second midfeather that often ranked second fluid heat transfer pipe from interval upper chamber of wing heat exchanger is extended obliquely downward to the second lower gas
Second side midfeather of room.
Selectively, the first side midfeather, which is equipped with, often ranked first fluid heat transfer pipe and every row with the first plate-fin heat exchanger
The through-hole that the head end of second fluid heat exchanger tube is connected, first midfeather is equipped with often ranked first with the first plate-fin heat exchanger
The through-hole that fluid heat transfer pipe and the tail end that often ranked second fluid heat transfer pipe are connected, second midfeather are equipped with and the second plate wing
The through-hole that the head end that often ranked first fluid heat transfer pipe and often ranked second fluid heat transfer pipe of heat exchanger is connected, the second side midfeather
Equipped with what is be connected with the tail end that often ranked first fluid heat transfer pipe and often ranked second fluid heat transfer pipe of the second plate-fin heat exchanger
Through-hole.
Selectively, heat accumulating type catalytic combustion unit includes: by the sequentially connected heating room of pipeline, catalyst chamber and storage
Hot cell, wherein heating room is used for the heating that heated up again to the hot VOCs gas entered in heat accumulating type catalytic combustion unit；Catalyst chamber
For carrying out catalysis oxidation to by the VOCs gas after catalyzer temperature-elevating to be decomposed to form high temperature purification gas；Regenerative chamber is for continuing
Collect the heat of high temperature purification gas to preheat the subsequent VOCs gas into heat accumulating type catalytic combustion unit.
Selectively, the heat medium for heating room is natural gas or electrothermal tube.
Preferably, the catalyst in catalyst chamber is honeycomb type noble metal catalyst.
It is highly preferred that the catalyst in catalyst chamber is Pd and/or Pt.
Selectively, heat accumulating type catalytic combustion unit further includes the process chamber between heating room and catalyst chamber, processing
Room is for removing the catalyst poison contained in hot VOCs gas.
Wherein, catalyst poison refers to the substance so that catalyst loss of catalytic activity.
More specifically, catalyst poison can be Pb, Zn and Hg.
Preferably, the heat-storing material in regenerative chamber is thermal storage ceramic or Cast-iron Ball.
Wherein, 80~90 degrees Celsius of the VOCs gas from drying production room is formed after the heat exchange of the first heat exchange unit
After 220~240 degrees Celsius of high temperature VOCs gas, referred to as 250~270 degrees Celsius of VOCs gas is further heated by heating room,
Carry out catalysis combustion decomposition in catalyst chamber, referred to as 280~300 degrees Celsius contain CO2And H2The high temperature purification gas of O, then into
Enter regenerative chamber with the heat of sequel high temperature purification gas, 280~300 degrees Celsius of warm purification gas of regenerative chamber discharge enters back into
First heat exchange unit, after exchanging heat to cold VOCs gas, cooling is known as 110~130 degrees Celsius of medium temperature purification gas.
It selectively, further include the second heat exchange unit, the second heat exchange unit includes cool air inlet, hot air outlet, low
Warm purified gas outlet and medium temperature purification gas entrance, wherein the medium temperature of medium temperature purification gas entrance and the first heat exchange unit
Purified gas outlet is connected by pipeline, and low temperature purification gas vent is connected with chimney by pipeline, and hot air outlet is logical
Overfire air pipeline is connected with the drying gas access of drying cavity, shape after exchanging heat from the cold air of cool air inlet
At hot-air be provided in drying cavity body by hot-air pipeline.
Wherein, 110~130 degrees Celsius of the medium temperature purification gas from the first heat exchange unit is entering the second heat exchange unit
Afterwards, it exchanges heat to the normal temperature air of 20 degrees centigrades, the air of 70~90 formed after heat exchange degree Celsius passes through hot-air
Pipeline is provided in drying cavity body, and the low temperature purification gas of about 60 formed after cooling degree Celsius then drains into chimney.
Selectively, VOCs gas pipeline is equipped with the first VOCs air pipe and the 2nd VOCs air pipe, the first VOCs air pipe
It is connected with the cold VOCs gas entrance of the first heat exchange unit account for VOCs gas total amount 60%~90% of cavity discharge will be dried
VOCs air lift be supplied in the first heat exchange unit and exchange heat, the 2nd VOCs air pipe and the drying gas access phase for drying cavity
Connection is 10%~40% VOCs gas for accounting for hot VOCs gas total amount to be back in drying cavity body.
Selectively, further include in drying production room and filter between pipeline on be arranged for filter introduce
What is be arranged on pipeline between the safe blower of the first of VOCs gas, the room Yu Jiare and process chamber is used to introduce VOCs gas to process chamber
The second safe blower.
Selectively, VOCs heat accumulating type catalytic combustion afterheat utilizing system can be used for generating when paint film or coating drying
The processing of VOCs gas is applied in the factories such as automobile factory, spare and accessory parts factory, Furniture Factory.
According to the solution of the present invention, it is electrically heated or combustion heating using heating room, it is ensured that accumulation of heat when system starts
Formula catalytic combustion unit temperature-constant operation is unaffected to improve VOCs treatment effect, can cut off and add after the completion of regenerative chamber accumulation of heat
Heating at hot cell, system can automatic constant-temperature operation, to reduce use cost.
The beneficial effects of the present invention are: (1), VOCs gas are after the three step process of process chamber, catalyst chamber and regenerative chamber, it is complete
Full decomposing, purifying, to ensure that the gas of discharge meets environmental emission standard；(2), the first heat exchange unit of setting can be into one
Heat after step effective use VOCs gas catalysis combustion decomposition, cold VOCs is preheated, realizes the self-sufficient of energy, simultaneously
Air further can also be heated into hot-air, be used as drying gas, take full advantage of the self-energy of VOCs gas, mention
High capacity usage ratio；The construction of the first plate-fin heat exchanger and the second plate-fin heat exchanger in (3) first heat exchange units, so that high
Cross layered heat exchange is carried out between warm purification gas and cold VOCs gas, heat exchange efficiency is improved, is more energy-saving and environmentally friendly；(4), 20%
~40% VOCs gas is back in drying cavity, is dried again to the intracorporal product paint film of drying cavity, is realized energy
Recycle, while reducing oxynitrides content in flue gas.
Detailed description of the invention
Fig. 1 shows the organigram of VOCs heat accumulating type catalytic combustion afterheat utilizing system of the invention.
Fig. 2 shows the organigrams of the first heat exchange unit of the invention.
Fig. 3 shows the construction of the first fluid heat exchanger tube of the first plate-fin heat exchanger and the second plate-fin heat exchanger of the invention
Schematic diagram.
Fig. 4 shows the construction of the second fluid heat exchanger tube of the first plate-fin heat exchanger and the second plate-fin heat exchanger of the invention
Schematic diagram.
Fig. 5 shows the organigram of the through-hole of the first side midfeather of the first heat exchange unit of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Please refer to Fig. 1, a kind of non-limiting embodiment according to the present invention, VOCs heat accumulating type catalytic combustion UTILIZATION OF VESIDUAL HEAT IN
System includes: drying production room 10, filter 20, the first heat exchange unit 30, the heat exchange list of heat accumulating type catalytic combustion unit 40, second
Member 50 and chimney 60.
Wherein, drying production room 10 includes drying cavity 110, and one end of drying cavity 110 is equipped with drying gas access
120, the other end of drying cavity 110 is equipped with VOCs gas collection port 130.
First heat exchange unit 30 enters equipped with high temperature purification gas access 301, medium temperature purified gas outlet 302, cold VOCs gas
Mouth 303 and hot VOCs gas outlet 304.
Filter 20 is equipped with filter inlet 210 and filter outlet 220, and filter inlet 210 passes through pipeline and drying
The VOCs gas collection port 130 of production room 10 is connected, the cold VOCs gas entrance of filter outlet 220 and the first heat exchange unit 30
303 are connected by VOCs gas pipeline L, thus after the particle dried in the VOCs gas that production room 10 generates is filtered out, then and it is defeated
It send to the first heat exchange unit 30.
In the non-limiting embodiment, as shown in Fig. 2, the first heat exchange unit 300 includes: outer housing 310, the first side
The midfeather 330, second of midfeather 320, first midfeather 340, the second side midfeather 350, the first diaphragm plate 360, interval
Diaphragm plate 370 and the second diaphragm plate 380, be formed between the one side wall of outer housing 310 and the first side midfeather 320
One chamber A, it is formed in the first air-exchanging chamber B between the first side midfeather 320 and first between midfeather 330, is formed between first
Interval cavity C between midfeather 330 and second between midfeather 340, be formed in second between midfeather 340 and the second side midfeather
The second air-exchanging chamber D between 350 and the second chamber being formed between another side wall of outer housing and the second side midfeather 350
Room E.Wherein, first chamber A is divided into the first upper chamber A1 and the first lower chamber A2 by the first diaphragm plate 360 from top to bottom,
Cavity C, which will be spaced, every diaphragm plate 370 is divided into interval upper chamber C1 and interval lower chamber C2, the second diaphragm plate 380 from top to bottom
Second chamber E is divided into from top to bottom in the second upper chamber E1 and the second lower chamber E2, the first air-exchanging chamber B and is equipped with the first plate wing
The second plate-fin heat exchanger T2 is provided in heat exchanger T1, the second air-exchanging chamber D, cold VOCs gas entrance 303 is set to the first upper chamber A1
Lateral wall, hot VOCs gas outlet 304 is set to the lateral walls of the second upper chamber E1, and high temperature purification gas access 301 is set to second
The lateral wall of lower chamber E2, medium temperature purified gas outlet 302 are set to the lateral wall of the first lower chamber A2.
Specifically, as shown in Figure 3 and Figure 4, the first plate-fin heat exchanger T1 includes the six of arranged stacked intersected with each other arranging
One fluid heat exchanger tube T11 and six ranked second fluid heat transfer pipe T12, and therewith symmetrically, the second plate-fin heat exchanger T2 also includes each other
The six of cross layered arrangement, which ranked first fluid heat transfer pipe T21 and six, ranked second fluid heat transfer pipe T22, often ranked first fluid heat transfer pipe
T11 (T21) and often ranked second fluid heat transfer pipe T12 (T22) respectively include five band wing light pipe (as shown in Figure 5).First plate wing
The fluid heat transfer pipe T11 that often ranked first of heat exchanger T1 is extended obliquely downward from the first side midfeather 320 at the first upper chamber A1
To first midfeather 330 of interval lower chamber C2, the second plate-fin heat exchanger T2's often ranked first fluid heat transfer pipe T21 from interval
Second midfeather 340 of lower chamber C2 tilts upward the second side midfeather 350 for extending to the second upper chamber E1 (such as Fig. 3 institute
Show).First plate-fin heat exchanger T1's often ranked second fluid heat transfer pipe T12 from the first side midfeather 320 at the first lower chamber A2
First midfeather 330 for extending to interval upper chamber C1 is tilted upward, the fluid that often ranked second of the second plate-fin heat exchanger T2 changes
Second midfeather 340 of heat pipe T22 from interval upper chamber C1 are extended obliquely downward to the second side mediastinum of the second lower chamber E2
Plate 350 (as shown in Figure 4).
In the non-limiting embodiment, the first side midfeather 320 is equipped with every row with the first plate-fin heat exchanger T1
The through-hole 3208 that first fluid heat exchanger tube T11 and the head end that often ranked second fluid heat transfer pipe T12 are connected, first midfeather
330 are equipped with the tail that often ranked first fluid heat transfer pipe T11 and often ranked second fluid heat transfer pipe T12 with the first plate-fin heat exchanger T1
The through-hole (not shown) that is connected is held, similarly, second midfeather 340 is equipped with often ranked first with the second plate-fin heat exchanger T2
The through-hole (not shown) that fluid heat transfer pipe T21 and the head end that often ranked second fluid heat transfer pipe T22 are connected, the second side midfeather
350 are equipped with the tail that often ranked first fluid heat transfer pipe T21 and often ranked second fluid heat transfer pipe T22 with the second plate-fin heat exchanger T2
Hold the through-hole (not shown) being connected.By taking the first side midfeather 320 as an example, as shown in figure 5, the longitudinal direction of the first side midfeather 320
Top and the bottom are respectively provided with six exhausting holes 3208, are laterally evenly distributed with again there are five through-hole on every exhausting hole, so that VOCs gas or net
Change gas to pass through, as shown in figure 5, longitudinal two-part through-hole up and down of the first side midfeather 320 is (by 360 phase of the first diaphragm plate
Every) it is offset horizontally by certain distance by column in the horizontal direction, so that the six of the first plate-fin heat exchanger T1 ranked first fluid
Heat exchanger tube T11 and six ranked second fluid heat transfer pipe T12 can be with arranged stacked intersected with each other.
The cold VOCs gas of 80 degrees centigrades enters in the first upper chamber A1 from cold VOCs gas entrance 303 as a result, from first
Through-hole on side midfeather 320 often ranked first fluid heat transfer pipe T11 into the first air-exchanging chamber B along the first plate-fin heat exchanger T1
It is interior, interval lower chamber C2 is then entered by first midfeather 330 again, then pass through the through-hole edge on second midfeather 340
The second plate-fin heat exchanger T2 often ranked first fluid heat transfer pipe T21 into the second air-exchanging chamber D, after completing heat exchange, by the
Through-hole on two side midfeathers 350 enters the second upper chamber E1, and about 230 degrees Celsius of hot VOCs gas of formation is from the second upper chamber
The hot VOCs gas outlet 304 being arranged at the lateral wall of E1 is expelled to heat accumulating type catalytic combustion unit 40.Meanwhile 280~290 is Celsius
The high temperature purification gas of degree enters in the second lower chamber E2 from high temperature purification gas access 301, from the second side midfeather 350
Through-hole often ranked second fluid heat transfer pipe T22 into the second air-exchanging chamber D along the second plate-fin heat exchanger T2's, then again by the
Two midfeathers 340 enter interval upper chamber C1, then by the through-hole on first midfeather 330 along the first plate-fin heat exchanger
The fluid heat transfer pipe T12 that often ranked second of T1 enters in the first air-exchanging chamber B, after completing heat exchange, by the first side midfeather 320
Through-hole enters the first lower chamber A2, the medium temperature purification that the medium temperature purification gas of formation is arranged from the lateral wall of the first lower chamber A2
Gas vent 302 is discharged.
As shown in Figure 1, heat accumulating type catalytic combustion unit 40 include: heating room 410, process chamber 420, catalyst chamber 430 and
Regenerative chamber 440.Wherein, heating room 410 is to the heat entered in heat accumulating type catalytic combustion unit 40 by hot VOCs gas entrance 401
VOCs gas is heated up heating again, and the heat that can be generated herein by burning natural gas be heated, and can also pass through electric heating
Pipe is heated, so that the hot VOCs gas by about 230 degrees Celsius is heated up to about 260 degrees Celsius again.Then, process chamber 420 is utilized
Not only the catalyst poison contained in hot VOCs gas is purged, while can also be to the substance that subsequent catalyst is not handled
Carry out pre-treatment.Then, using in catalyst chamber 430 precious metals pd and/or Pt to VOCs gas carry out catalysis oxidation, thus by it
It is decomposed to form containing CO2And H2About 290 degrees Celsius of the high temperature purification gas of O, regenerative chamber 440 then can sequel high temperature purification gases
Heat, the subsequent VOCs gas into heat accumulating type catalytic combustion unit is preheated, and pass through high temperature purification gas vent
402 are delivered to the high temperature purification gas of discharge at the first heat exchange unit 30.
It further include the second heat exchange unit 50 in system as another alternative embodiment.As shown in Figure 1, second
Heat exchange unit 50 includes cool air inlet 501, hot air outlet 502, medium temperature purification gas entrance 503 and low temperature purification gas
Outlet 504.Wherein, the medium temperature purified gas outlet 302 of medium temperature purification gas entrance 503 and the first heat exchange unit 30 passes through pipeline
It is connected, low temperature purification gas vent 504 is connected with chimney 60 by pipeline, and hot air outlet 502 passes through hot-air pipeline
HL is connected with the drying gas access 120 of drying cavity 110, thus the cold air entered in the future by cool air inlet 501
The hot-air formed after heat exchange is provided in drying cavity 110 by hot-air pipeline HL.
As another alternative embodiment, VOCs gas pipeline L is equipped with the first VOCs air pipe L1 and the 2nd VOCs
Air pipe L2, the first VOCs air pipe L1 are connected with the cold VOCs gas entrance 303 of the first heat exchange unit 30, thus by drying cavity
60%~90% VOCs air lift for accounting for VOCs gas total amount that body 110 is discharged, which is supplied in the first heat exchange unit 30, to exchange heat.The
Two VOCs air pipe L2 are connected with the drying gas access 120 of drying cavity 110, so that the 10% of hot VOCs gas total amount will be accounted for
~40% VOCs gas is back in drying cavity 110 and recycles again.
In the non-limiting embodiment, drying production room 10 and filter 20 between pipeline on be arranged for
Filter 20 introduces the first safe blower F1 of VOCs gas, the use being arranged on the pipeline between the room Yu Jiare 410 and process chamber 420
In the second safe blower F2 for introducing VOCs gas to process chamber 420, the first safe safe blower F2 of blower F1 and second is can
Frequency control blower, to guarantee the running safety of whole system.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means that specific features, structure or feature described in conjunction with this embodiment or example include
In at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms necessarily needle
Pair be identical embodiment or example.In addition, without conflicting with each other, those skilled in the art can say this
The feature of different embodiments or examples described in bright book and different embodiments or examples is combined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.For example, first or second heat exchanger can use heat exchange of heat pipe or tubulation
Formula heat exchanger.
Claims (10)
1. a kind of VOCs heat accumulating type catalytic combustion afterheat utilizing system, comprising: drying production room, drying production room includes drying
Dry cavity, one end of the drying cavity are equipped with drying gas access, and the other end of the drying cavity is collected equipped with VOCs gas
Mouthful, it is characterised in that:
The VOCs heat accumulating type catalytic combustion afterheat utilizing system further includes the first heat exchange unit and heat accumulating type catalytic combustion unit,
Wherein,
First heat exchange unit is equipped with high temperature purification gas access, medium temperature purified gas outlet, cold VOCs gas entrance, Yi Jire
VOCs gas outlet, wherein the medium temperature purified gas outlet is connected with chimney, and the cold VOCs gas entrance passes through pipeline and institute
The VOC gas sampling mouth for stating drying cavity is connected, so that cold VOCs gas enters first heat exchange unit and carries out heat exchange type
At hot VOCs gas；
The heat accumulating type catalytic combustion unit includes hot VOCs gas entrance and high temperature purification gas vent, wherein the hot VOCs
Gas entrance is connected by pipeline with the outlet of the hot VOCs gas of first heat exchange unit, and the high temperature purification gas vent passes through
Pipeline is connected with the high temperature purification gas access of first heat exchange unit, so that the high temperature generated after catalysis burning VOCs gas
Purification gas enters first heat exchange unit and cold VOCs gas carries out heat exchange.
2. VOCs heat accumulating type catalytic combustion afterheat utilizing system as described in claim 1, which is characterized in that further include being connected to
It is described drying production room and first heat exchange unit between filter, wherein the filter be equipped with filter inlet and
Filter outlet, the filter inlet are connected by pipeline with the VOCs gas collection port of drying production room, the mistake
Filter outlets are connected with the cold VOCs gas entrance of first heat exchange unit by VOCs gas pipeline to produce the drying
The particle in VOCs gas that room generates filters out and is delivered to first heat exchange unit.
3. VOCs heat accumulating type catalytic combustion afterheat utilizing system as claimed in claim 2, which is characterized in that first heat exchange
Unit include: outer housing, along the outer housing transverse direction be sequentially arranged in the outer housing inner cavity in the first side mediastinum
Plate, first midfeather, second midfeather and the second side midfeather, be formed in the one side wall of the outer housing with it is described
First first chamber between midfeather, when being formed in described first between midfeather and described first between midfeather first
Air-exchanging chamber is formed in interval chamber between first midfeather and described second between midfeather, is formed in described second
Between the second air-exchanging chamber between midfeather and second side midfeather, be formed in another side wall and described the of the outer housing
Second chamber between two side midfeathers extends in the first chamber from the one side wall central horizontal of the outer housing
First diaphragm plate of first side midfeather prolongs in the interval chamber from the central horizontal of first midfeather
It extends to the interval diaphragm plate of second midfeather and is set in the second chamber from second side midfeather center
Extend horizontally to the second diaphragm plate of another side wall of the outer housing, wherein first diaphragm plate is by the first chamber
It is divided into the first upper chamber and the first lower chamber from top to bottom, the interval diaphragm plate divides the interval chamber from top to bottom
The second chamber is divided into the second upper chamber from top to bottom for interval upper chamber and interval lower chamber, second diaphragm plate
And second lower chamber, the first plate-fin heat exchanger is equipped in first air-exchanging chamber, is provided with the second plate in second air-exchanging chamber
Wing heat exchanger, the cold VOCs gas entrance are set to the lateral wall of first upper chamber, and the hot VOCs gas outlet is set to described
The lateral wall of second upper chamber, the high temperature purification gas access are set to the lateral wall of second lower chamber, and the medium temperature is net
Change the lateral wall that gas vent is set to first lower chamber.
4. VOCs heat accumulating type catalytic combustion afterheat utilizing system as claimed in claim 3, which is characterized in that the first plate wing
Heat exchanger and second plate-fin heat exchanger respectively include at least two rows of first fluid heat exchanger tubes and at least two rows of second fluids change
Heat pipe, wherein at least two rows of first fluid heat exchanger tubes and at least two rows of second fluid heat exchanger tubes stacking intersected with each other,
It often ranked first fluid heat transfer pipe and often ranked second fluid heat transfer pipe and respectively include at least four band wing light pipes, the first plate wing changes
The fluid heat transfer pipe that often ranked first of hot device is extended obliquely downward from the first side midfeather at first upper chamber between described
Every first midfeather of lower chamber, second plate-fin heat exchanger often ranked first fluid heat transfer pipe from the interval lower chamber
Second midfeather tilt upward the second side midfeather for extending to second upper chamber, first plate-fin heat exchanger
It often ranked second fluid heat transfer pipe and tilted upward from the first side midfeather at first lower chamber and extend to gas on the interval
First midfeather of room, second plate-fin heat exchanger often ranked second fluid heat transfer pipe from the second of the interval upper chamber
Between midfeather extend obliquely downward to the second side midfeather of second lower chamber.
5. VOCs heat accumulating type catalytic combustion afterheat utilizing system as claimed in claim 4, which is characterized in that first side is vertical
Partition is equipped with the head end that often ranked first fluid heat transfer pipe and often ranked second fluid heat transfer pipe with first plate-fin heat exchanger
The through-hole being connected, first midfeather be equipped with first plate-fin heat exchanger often ranked first fluid heat transfer pipe and
It often ranked second the through-hole that the tail end of fluid heat transfer pipe is connected, second midfeather is equipped with to exchange heat with the second plate wing
The through-hole that the head end that often ranked first fluid heat transfer pipe and often ranked second fluid heat transfer pipe of device is connected, second side midfeather
It is equipped with and is connected with the tail end that often ranked first fluid heat transfer pipe and often ranked second fluid heat transfer pipe of second plate-fin heat exchanger
Logical through-hole.
6. VOCs heat accumulating type catalytic combustion afterheat utilizing system as described in claim 1, which is characterized in that the heat accumulating type is urged
Change fuel element include: by the sequentially connected heating room of pipeline, catalyst chamber and regenerative chamber,
Wherein, the heating room, which is used to heat up to the hot VOCs gas entered in the heat accumulating type catalytic combustion unit again, adds
Heat；
The catalyst chamber is used to carry out catalysis oxidation to by the VOCs gas after catalyzer temperature-elevating to be decomposed to form high temperature purification gas
Body；
The regenerative chamber preheats subsequent into the heat accumulating type catalytic combustion for the heat of high temperature purification gas described in sequel
VOCs gas in unit.
7. VOCs heat accumulating type catalytic combustion afterheat utilizing system as claimed in claim 6, which is characterized in that the heating room
Heat medium is natural gas or electrothermal tube.
8. VOCs heat accumulating type catalytic combustion afterheat utilizing system as claimed in claim 7, which is characterized in that in the catalyst chamber
Catalyst be honeycomb type noble metal catalyst.
9. VOCs heat accumulating type catalytic combustion afterheat utilizing system as claimed in claim 7, which is characterized in that in the catalyst chamber
Catalyst be Pd and/or Pt.
10. VOCs heat accumulating type catalytic combustion afterheat utilizing system as claimed in claim 7, which is characterized in that the heat accumulating type
Catalytic combustion unit further includes the process chamber between the heating room and the catalyst chamber, and the process chamber is for removing institute
State the catalyst poison contained in hot VOCs gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017429.6A CN109404935A (en) | 2018-09-01 | 2018-09-01 | VOCs heat accumulating type catalytic combustion afterheat utilizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017429.6A CN109404935A (en) | 2018-09-01 | 2018-09-01 | VOCs heat accumulating type catalytic combustion afterheat utilizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404935A true CN109404935A (en) | 2019-03-01 |
Family
ID=65463746
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|---|---|---|---|
| CN201811017429.6A Pending CN109404935A (en) | 2018-09-01 | 2018-09-01 | VOCs heat accumulating type catalytic combustion afterheat utilizing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307894A (en) * | 2021-10-08 | 2022-04-12 | 河北天龙环保科技有限公司 | High-temperature heat storage catalytic oxidation system based on catalyst |
-
2018
- 2018-09-01 CN CN201811017429.6A patent/CN109404935A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307894A (en) * | 2021-10-08 | 2022-04-12 | 河北天龙环保科技有限公司 | High-temperature heat storage catalytic oxidation system based on catalyst |
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