CN206222340U - A kind of formaldehyde exhaust combustion and heat recovery system - Google Patents

A kind of formaldehyde exhaust combustion and heat recovery system Download PDF

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Publication number
CN206222340U
CN206222340U CN201621308323.8U CN201621308323U CN206222340U CN 206222340 U CN206222340 U CN 206222340U CN 201621308323 U CN201621308323 U CN 201621308323U CN 206222340 U CN206222340 U CN 206222340U
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CN
China
Prior art keywords
air
inlet
inlet pipe
pipe connection
gas
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Withdrawn - After Issue
Application number
CN201621308323.8U
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Chinese (zh)
Inventor
王卫华
陈勇强
李春红
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ZHEJIANG SHUANGFENG BOILER CO Ltd
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ZHEJIANG SHUANGFENG BOILER CO Ltd
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Priority to CN201621308323.8U priority Critical patent/CN206222340U/en
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Publication of CN206222340U publication Critical patent/CN206222340U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

A kind of formaldehyde exhaust combustion and heat recovery system, including gas handling system, igniter, burner, adiabatic furnace, overfire air device, burner hearth flame-out protection device and heat recovery system, the adiabatic furnace is located at the front of the gas handling system, the igniter is installed on the rear inner wall of adiabatic furnace and is located at the top of the overfire air device, the burner, overfire air device is respectively positioned in the adiabatic furnace, the overfire air device is located at the top of the burner and is arranged on the left and right sides inwall of adiabatic furnace, the gas outlet of the gas handling system connects with the air inlet of the burner, the gas outlet of air blower connects with the air inlet of the overfire air device.The utility model provides the formaldehyde exhaust combustion and heat recovery system that a kind of security is preferable, heat utilization efficiency is higher.

Description

A kind of formaldehyde exhaust combustion and heat recovery system
Technical field
The utility model belongs to technical field of pipeline connection, more particularly, to a kind of formaldehyde exhaust combustion and heat recovery system And its operating method.
Background technology
The silver-colored formaldehyde of legal system Formaldehyde Production 37%, H is contained in the tail gas of final three tower tops discharge2About 18-20%, CO, CH4、O2 Each 0.5%, CO25%, N272-74%, water and micro formaldehyde, methyl alcohol etc..Wherein about 20% or so combustible gas, its calorific value is about 526Kcal/Nm3If being utilized to burning and producing steam, pollution can be both eliminated, steam can be produced again.Formaldehyde tail gas belongs to poor Gas, mainly contains 20% or so H2, oxyhydrogen reaction belongs to explosive reaction.Therefore, how safe efficiently using as key Problem.
Although general Formaldehyde Production factory is provided with formaldehyde exhaust gas heat recovery boiler at present, but generally using one water seal dress Put, burner is not equipped with automatic ignition device, be not equipped with burner hearth flame-out protection device, security is poor;Without using guarantor Warm adiabatic furnace, burner hearth does not use staged air distribution device, and efficiency of combustion is relatively low;Waste heat boiler generally uses vertical fire-pipe formula knot Structure, without efficient heating surface, and heating surface area arrangement deficiency is used, waste heat boiler exhaust gas temperature is higher, and waste heat boiler afterbody does not have Have using flue gas condensing technology, heat recovery rate is low;Often produce UTILIZATION OF VESIDUAL HEAT IN energy after the exhaust combustion that one ton of formaldehyde is produced Produce 0.25 ton or so of low-pressure saturated steam.
Chinese patent is disclosed in CN201520921389.3 and CN201120276282.X, is filled using one water seal Put, burner is not equipped with automatic ignition device, be not equipped with burner hearth flame-out protection device, without using insulation heat insulation furnace Thorax, burner hearth does not use staged air distribution device, waste heat boiler afterbody not to use flue gas condensing technology.
In sum, although general Formaldehyde Production factory is provided with formaldehyde exhaust gas heat recovery boiler at present, but security is poor, profit With inefficient.
The content of the invention
In order to overcome the shortcomings of that existing formaldehyde exhaust gas heat recovery boiler has that security is poor, heat utilization efficiency is relatively low, this practicality A kind of new security of offer is preferable, heat utilization efficiency is higher formaldehyde exhaust combustion and heat recovery system and its operating method.
The utility model solves the technical scheme that its technical problem used:
A kind of formaldehyde exhaust combustion and heat recovery system, including gas handling system, igniter, burner, adiabatic furnace, Overfire air device, burner hearth flame-out protection device and heat recovery system, the adiabatic furnace are located at the front of the gas handling system, institute State the top that igniter is installed on the rear inner wall of adiabatic furnace and is located at the overfire air device, the burner, Overfire air device is respectively positioned in the adiabatic furnace, and the overfire air device is located at the top of the burner and is arranged on exhausted On the left and right sides inwall of hot burner hearth, the gas outlet of the gas handling system connects with the air inlet of the burner, air blower Gas outlet connects with the air inlet of the overfire air device;
The burner hearth flame-out protection device includes flame monitoring apparatus and PLC control cabinet, and the flame monitoring apparatus are located at The top of overfire air device is simultaneously installed on the preceding inner wall of adiabatic furnace, the flame monitoring apparatus and the PLC control cabinet Connection, the PLC control cabinet is connected with the intake valve of the gas handling system;
The heat recovery system include waste heat boiler, energy-saving appliance and condenser, the top gas outlet of the adiabatic furnace with The bottom air inlet connection of waste heat boiler, the gas outlet of the waste heat boiler connects with the air inlet of the energy-saving appliance, the section The gas outlet of energy device connects with the air inlet of the condenser, and the gas outlet of the condenser connects with the air inlet of air-introduced machine, The gas outlet of air-introduced machine connects with the smoke inlet of chimney.
Further, the gas handling system include tail gas inlet manifold, intake valve, the first inlet pipe connection, the first water sealed tank, Second inlet pipe connection, the first air outlet valve, the 3rd inlet pipe connection, the 4th inlet pipe connection, the second air outlet valve, exhaust emissions fire Torch pipe, the 5th inlet pipe connection, the second water sealed tank, the 6th inlet pipe connection and air inlet distributor box, the tail gas inlet manifold's Gas outlet is connected by the intake valve with the air inlet of the first inlet pipe connection, and the gas outlet of first inlet pipe connection is inserted Enter under the bottom liquid level of the first water sealed tank, the air inlet of second inlet pipe connection connects with the top front side of the first water sealed tank Logical, the gas outlet of second inlet pipe connection is connected by the first air outlet valve with the air inlet of the 3rd inlet pipe connection, described The gas outlet of the 3rd inlet pipe connection is connected with the inlet end of the air inlet distributor box, the outlet side of the air inlet distributor box and institute State burner connection;
The air inlet of the 4th inlet pipe connection is connected with the top of the first water sealed tank, the 4th inlet pipe connection Gas outlet is connected by the second air outlet valve with the inlet end of the exhaust emissions flare stack, the outlet of the exhaust emissions flare stack End is provided with pressure release igniter;The air inlet of the 5th inlet pipe connection is connected with the top rear side of the first water sealed tank, and the described 5th enters The gas outlet of gas connecting tube connects with the top of the second water sealed tank, and the air inlet of the 6th inlet pipe connection inserts the second water seal Under the bottom liquid level of groove, the gas outlet of the 6th inlet pipe connection is connected with the inlet end of the exhaust emissions flare stack.
Further, the igniter includes high-energy igniter, ignitor and torch oil gun, the high-energy igniter Rear end with the ignitor is connected, and the front end of the ignitor is located at adiabatic furnace through the rear inner wall of adiabatic furnace Interior, the rear end of the torch oil gun is connected with oil feed pump, and the front end of the torch oil gun passes through the preceding inner wall of adiabatic furnace.
Further, the burner uses multi-tube structure, and its burner uses swirl vane formula structure.
Further, the overfire air device includes more than two overfire air jets, on the wall of adiabatic furnace the same side More than two overfire air jets in upper and lower two misarrangement position arrangement.
Further, the waste heat boiler includes boiler body, and radiation chamber and convection cell, institute are provided with the boiler body The inwall for stating radiation chamber uses membrane wall heating surface, and the festoon of lateral arrangement, the water pipe are provided with the convection cell The outer wall of beam constitutes convection heating surface, and explosion proof door is additionally provided with the waste heat boiler, and the explosion proof door is arranged on membrane wall and is heated On face.
Further, the energy-saving appliance and condenser have helix fin tubular type heating surface, helix fin tubular type heating surface It is staggered in arrangement using flue gas transversal flow.
Further, the pressure release igniter is made up of high-energy igniter and ignitor.
Main beneficial effect of the present utility model is:Gas handling system prevents normal using double water sealed tanks and operated pneumatic valve assembly There is releasing pressure automatically when tempering and abnormal admission pressure during burning, improve security;Using light oil automatic ignition device, first carry out Furnace purge, then light oil igniting, then air inlet, prevent igniting from detonation occurring, and improve ignition security;Using flame monitoring apparatus, Blowout protection is carried out, when flame monitoring apparatus monitoring is less than flare up fire, the first air outlet valve is automatically switched off, operation safety is improved Property;Installing explosion proof door, improves safety in operation;
Using insulation adiabatic furnace, staged air distribution is carried out using overfire air device, realize that low excess air coefficient burns, subtracted The generation and discharge of low NOx;Waste heat boiler and energy-saving appliance, condenser use efficient heating surface;Using flue gas condensing skill Art, improves heat recovery efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of formaldehyde exhaust combustion and heat recovery system.
Fig. 2 is the front view of burner.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the right view of Fig. 2.
Fig. 5 is the structural representation of burner.
Fig. 6 is the structural representation of waste heat boiler.
Fig. 7 is the schematic diagram of helix fin tubular type heating surface.
Fig. 8 is A-A figures in Fig. 7.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings.
1~Fig. 8 of reference picture, a kind of formaldehyde exhaust combustion and heat recovery system, including gas handling system, igniter, burning Device 15, adiabatic furnace 16, overfire air device 17, burner hearth flame-out protection device and heat recovery system, the adiabatic furnace 16 In the front of the gas handling system, the igniter is installed on the rear inner wall of adiabatic furnace 16 and is located at the Secondary Air The top of device 17, the burner 15, overfire air device 17 are respectively positioned in the adiabatic furnace 16, the overfire air device 17 are located at the top of the burner 15 and are arranged on the left and right sides inwall of adiabatic furnace 16, the outlet of the gas handling system Mouth is connected with the air inlet of the burner 15, and the gas outlet of air blower 18 connects with the air inlet of the overfire air device 17 It is logical;
The burner hearth flame-out protection device includes flame monitoring apparatus 27 and PLC control cabinet 28, the flame monitoring apparatus 27 tops for being located at overfire air device 17 are simultaneously installed on the preceding inner wall of adiabatic furnace 16, the flame monitoring apparatus 27 and institute State PLC control cabinet 27 to connect, the PLC control cabinet 28 is connected with the intake valve of the gas handling system;
The heat recovery system includes waste heat boiler 19, energy-saving appliance 20 and condenser 21, the top of the adiabatic furnace 16 Gas outlet connects with the bottom air inlet of waste heat boiler 19, the air inlet of the gas outlet of the waste heat boiler 19 and the energy-saving appliance 20 Mouthful connection, the gas outlet of the energy-saving appliance 20 connect with the air inlet of the condenser 21, the gas outlet of the condenser 21 and The air inlet connection of air-introduced machine 22, the gas outlet of air-introduced machine 22 connects with the smoke inlet of chimney 26.
Further, the gas handling system includes tail gas inlet manifold 1, intake valve 2, the first inlet pipe connection 3, the first water seal Groove 4, the second inlet pipe connection 5, the first air outlet valve 6, the 3rd inlet pipe connection 7, the 4th inlet pipe connection 8, the second air outlet valve 9, Exhaust emissions flare stack 10, the 5th inlet pipe connection 11, the second water sealed tank 12, the 6th inlet pipe connection 13 and air inlet distributor box 14, the gas outlet of the tail gas inlet manifold 1 is connected by the intake valve 2 with the air inlet of the first inlet pipe connection 3, described The gas outlet of the first inlet pipe connection 3 is inserted under the bottom liquid level of the first water sealed tank 4, the air inlet of second inlet pipe connection 5 Mouth is connected with the top front side of the first water sealed tank 4, and the gas outlet of second inlet pipe connection 5 passes through the first air outlet valve and the 3rd The air inlet connection of inlet pipe connection 7, the gas outlet of the 3rd inlet pipe connection 7 and the inlet end of the air inlet distributor box 14 Connection, the outlet side of the air inlet distributor box 14 is connected with the burner;
The air inlet of the 4th inlet pipe connection 8 is connected with the top of the first water sealed tank 4, the 4th inlet pipe connection 8 gas outlet is connected by the second air outlet valve 9 with the inlet end of the exhaust emissions flare stack 10, the exhaust emissions flare stack 10 outlet side is provided with pressure release igniter;The air inlet of the 5th inlet pipe connection 11 is connected with the top rear side of the first water sealed tank 4, The gas outlet of the 5th inlet pipe connection 11 connects with the top of the second water sealed tank 12, and the 6th inlet pipe connection 13 enters Gas port is inserted under the bottom liquid level of the second water sealed tank 12, gas outlet and the exhaust emissions fire of the 6th inlet pipe connection 13 The inlet end connection of torch pipe 10.
Further, the igniter includes high-energy igniter 23, ignitor 24 and torch oil gun 25, the high energy Igniter 23 is connected with the rear end of the ignitor 24, the front end of the ignitor 24 through after adiabatic furnace 16 within the walls Wall is located in adiabatic furnace 16, and the rear end of the torch oil gun 25 is connected with oil feed pump 30, and the front end of the torch oil gun 25 is worn Cross the preceding inner wall of adiabatic furnace 16.
Further, the burner 15 uses multi-tube structure, and its burner 31 uses swirl vane formula structure.
Further, the overfire air device 17 includes more than two overfire air jets, in the same side of adiabatic furnace 16 More than two overfire air jets on wall are in upper and lower two misarrangement position arrangement.
Further, the waste heat boiler 19 includes boiler body, and radiation chamber and convection cell are provided with the boiler body, The inwall of the radiation chamber uses membrane wall heating surface 32, and the festoon of lateral arrangement is provided with the convection cell, described The outer wall of festoon constitutes convection heating surface 33, and explosion proof door 29 is additionally provided with the waste heat boiler 19, and the explosion proof door 29 is set On membrane wall heating surface 32.
Further, the energy-saving appliance 20 and condenser 21 have helix fin tubular type heating surface, and helix fin tubular type is received Hot face is staggered in arrangement using flue gas transversal flow.
Further, the pressure release igniter is made up of high-energy igniter and ignitor.
In the present embodiment, operated pneumatic valve assembly includes intake valve 2, the first air outlet valve 6 and the second air outlet valve 9;
The overfire air device 17 is arranged at the left and right sides inwall of adiabatic furnace 16, and height higher slice arrangement is realized dividing Level air-distribution, reduces the ignition temperature in adiabatic furnace 16, reduces generation and the discharge capacity of NOx;Both sides jetting type Secondary Air stagger arrangement To spray, feeding excess air coefficient is about 1.15 or so air;Overfire air jet air outlet velocity about 50m/s, Secondary Air range About 2 meters;Formaldehyde tail gas and air carry out adiabatic combustion after being sufficiently mixed in adiabatic furnace 16;Because formaldehyde tail gas belongs to lean gas, About 800 DEG C or so of adiabatic combustion temperature, according to data of literatures, heating power nitrogen and quick nitrogen yield are considerably less at 800 DEG C, right For the system,, in 1.15 or so low excess air coefficients, the fuel bound nitrogen produced during 800 DEG C or so low-temperature burnings is also very for it Few, actual measurement is about 30mg/Nm3;It is significantly less than GB13271-2014《Emission standard of air pollutants for boilers》Middle key area is new Build gas fired-boiler limitation 150mg/Nm3
Waste heat boiler 19 has membrane wall heating surface 32 and convection heating surface 33, and convection heating surface 33 is laterally rushed using flue gas Brush in-line arrangement, flue gas flow rate about 8-9m/s or so, energy-saving appliance 20 and condenser 21 have helix fin tubular type heating surface 34;Spiral shell Rotation fin tubular type heating surface 34 is staggered in arrangement using flue gas transversal flow;Flue gas flow rate about 8m/s or so;Spiral finned tube fin Thickness 1.2mm, spacing about 8-10mm, fin height about 0.25d;Formaldehyde tail gas hydrogen content about 20%, after burning in generation flue gas Vapor volume share about 14% or so, about 60 DEG C of flue gas aqueous dew point temperature, if exhaust gas temperature is reduced to dew-point temperature 60 Below DEG C, then vapor is condensed into water and releases the latent heat of vaporization in flue gas, again by energy-saving appliance after being absorbed by the cold water in condenser Further enter waste heat boiler after heating, then boiler thermal output will improve about 6%-7%.Through theoretical calculation and practical test, row Cigarette temperature drops to 50 DEG C or so, then often produce what the formaldehyde tail gas produced by one ton of formaldehyde was produced using the system through waste heat boiler Low-pressure saturated steam is up to 500Kg;
The burner uses multi-tube structure, and nozzle is the critical piece of burner, using swirl vane formula knot Structure;Blade tilt is 60 °, jet expansion wind speed about 5m/s.
The operating method of a kind of formaldehyde exhaust combustion and heat recovery system is:
Formaldehyde tail gas passes sequentially through tail gas inlet manifold 1, intake valve 2, the first inlet pipe connection 3, the first water sealed tank 4, Two inlet pipe connections 5, the first air outlet valve 6, the 3rd inlet pipe connection 7, air inlet distributor box 14;During normal work, intake valve 2 and The standard-sized sheet of one air outlet valve 6;First water sealed tank 4 is used to prevent burner 15 to be tempered;
First carry out the purging of adiabatic furnace 16 before igniting, then by ignition device, then drive the first air outlet valve 6 entering formaldehyde tail Gas normal combustion;
Before burner 15 is stopped, the second air outlet valve 9 is first opened, close the air outlet valve 6 of intake valve 2 and first;
During normal work, when the gaseous-pressure of tail gas inlet manifold 1 is too high, formaldehyde tail gas connects automatically by the 5th air inlet Adapter 11, the second water sealed tank 12, the 6th inlet pipe connection 13, the pressure release of exhaust emissions flare stack 10;Prevent a large amount of formaldehyde interior in short-term Tail gas enters burner 15 and adiabatic furnace 16 and assembles, and has little time burning and cause tail gas concentration to rise to reach explosion limit and cause Security incident;
Formaldehyde tail gas by gas handling system, into burner 15, by after ignition device, and from overfire air device After the air mixing ejected in 17 overfire air jet, the burning in adiabatic furnace 16, high-temperature flue gas carry heat and enter remaining Heat boiler 19, after the membrane wall heating surface 32 and convection heating surface 33 of waste heat boiler 19 absorb heat, flue gas enters energy-conservation Device 20 and condenser 21, after temperature is further reduced, by being drawn for air-introduced machine 22, enter chimney 26;
Cold air enters overfire air device 17 from the gas outlet of air blower 18, is sprayed from the nozzle of overfire air device 17, two The stagger arrangement of secondary wind nozzle, layered arrangement, realize staged air distribution, the burning of low excess air coefficient, reduce the generation and discharge of NOx;
Using hearth flame monitoring device, blowout protection is carried out, when flame monitoring apparatus monitoring is less than flare up fire, from It is dynamic to close the first air outlet valve 6, improve safety in operation;
It is the utility model simple structure, high with burning higher and heat exchange efficiency, security reliability;Formaldehyde exhaust combustion And heat recovery system can be recycled with the tail gas produced by PARA FORMALDEHYDE PRILLS(91,95) production, the energy recovery for being discharged is used to supply Heat, its waste heat recovery utilization ratio is higher than existing treatment technology, and it is dirty to effectively reduce NOx of the conventional combustion produced by Dye, realizes the harmless treatment of industrial waste gas.The tail gas of discharge meets GB13271-2014《Boiler Air Pollutant Emission mark It is accurate》With the regulation of other standards.

Claims (8)

1. a kind of formaldehyde exhaust combustion and heat recovery system, it is characterised in that:Including gas handling system, igniter, burner, Adiabatic furnace, overfire air device, burner hearth flame-out protection device and heat recovery system, the adiabatic furnace are located at the gas handling system Front, the igniter is installed on the rear inner wall of adiabatic furnace and is located at the top of the overfire air device, described Burner, overfire air device are respectively positioned in the adiabatic furnace, and the overfire air device is located at the top of the burner And on the left and right sides inwall of adiabatic furnace, the gas outlet of the gas handling system connects with the air inlet of the burner Logical, the gas outlet of air blower connects with the air inlet of the overfire air device;
The burner hearth flame-out protection device includes flame monitoring apparatus and PLC control cabinet, and the flame monitoring apparatus are located at secondary The top of wind apparatus is simultaneously installed on the preceding inner wall of adiabatic furnace, and the flame monitoring apparatus are connected with the PLC control cabinet, The PLC control cabinet is connected with the intake valve of the gas handling system;
The heat recovery system includes waste heat boiler, energy-saving appliance and condenser, the top gas outlet of the adiabatic furnace and waste heat The bottom air inlet connection of boiler, the gas outlet of the waste heat boiler connects with the air inlet of the energy-saving appliance, the energy-saving appliance Gas outlet connected with the air inlet of the condenser, the gas outlet of the condenser connects with the air inlet of air-introduced machine, air inducing The gas outlet of machine connects with the smoke inlet of chimney.
2. a kind of formaldehyde exhaust combustion as claimed in claim 1 and heat recovery system, it is characterised in that:The gas handling system bag Include tail gas inlet manifold, intake valve, the first inlet pipe connection, the first water sealed tank, the second inlet pipe connection, the first air outlet valve, Three inlet pipe connections, the 4th inlet pipe connection, the second air outlet valve, exhaust emissions flare stack, the 5th inlet pipe connection, the second water seal Groove, the 6th inlet pipe connection and air inlet distributor box, the gas outlet of the tail gas inlet manifold are entered by the intake valve with first The air inlet connection of gas connecting tube, the gas outlet of first inlet pipe connection is inserted under the bottom liquid level of the first water sealed tank, institute State the air inlet of the second inlet pipe connection to be connected with the top front side of the first water sealed tank, the gas outlet of second inlet pipe connection Be connected with the air inlet of the 3rd inlet pipe connection by the first air outlet valve, the gas outlet of the 3rd inlet pipe connection with it is described enter The inlet end connection of gas distributor box, the outlet side of the air inlet distributor box is connected with the burner;
The air inlet of the 4th inlet pipe connection is connected with the top of the first water sealed tank, the outlet of the 4th inlet pipe connection Mouth is connected by the second air outlet valve with the inlet end of the exhaust emissions flare stack, and the outlet side of the exhaust emissions flare stack sets There is pressure release igniter;The air inlet of the 5th inlet pipe connection is connected with the top rear side of the first water sealed tank, and the 5th air inlet connects The gas outlet of adapter connects with the top of the second water sealed tank, and the air inlet of the 6th inlet pipe connection inserts the second water sealed tank Under the liquid level of bottom, the gas outlet of the 6th inlet pipe connection is connected with the inlet end of the exhaust emissions flare stack.
3. a kind of formaldehyde exhaust combustion as claimed in claim 1 or 2 and heat recovery system, it is characterised in that:The igniting dress Put including high-energy igniter, ignitor and torch oil gun, the high-energy igniter is connected with the rear end of the ignitor, institute State the front end of ignitor to be located in adiabatic furnace through the rear inner wall of adiabatic furnace, the rear end of the torch oil gun and fuel feeding Pump is connected, and the front end of the torch oil gun passes through the preceding inner wall of adiabatic furnace.
4. a kind of formaldehyde exhaust combustion as claimed in claim 1 or 2 and heat recovery system, it is characterised in that:The burning dress Put and use multi-tube structure, its burner uses swirl vane formula structure.
5. a kind of formaldehyde exhaust combustion as claimed in claim 1 or 2 and heat recovery system, it is characterised in that:The Secondary Air Device includes more than two overfire air jets, and the more than two overfire air jets on the wall of adiabatic furnace the same side are in upper and lower Two misarrangements position arrangement.
6. a kind of formaldehyde exhaust combustion as claimed in claim 1 or 2 and heat recovery system, it is characterised in that:The waste heat pot Stove includes boiler body, and radiation chamber and convection cell are provided with the boiler body, and the inwall of the radiation chamber uses membrane type Wall heating surface, is provided with the festoon of lateral arrangement in the convection cell, the outer wall of the festoon constitutes convection heating surface, described Explosion proof door is additionally provided with waste heat boiler, the explosion proof door is arranged on membrane wall heating surface.
7. a kind of formaldehyde exhaust combustion as claimed in claim 1 or 2 and heat recovery system, it is characterised in that:The energy-saving appliance There is helix fin tubular type heating surface with condenser, helix fin tubular type heating surface is staggered in arrangement using flue gas transversal flow.
8. a kind of formaldehyde exhaust combustion as claimed in claim 2 and heat recovery system, it is characterised in that:The pressure release igniter It is made up of high-energy igniter and ignitor.
CN201621308323.8U 2016-11-27 2016-11-27 A kind of formaldehyde exhaust combustion and heat recovery system Withdrawn - After Issue CN206222340U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621308323.8U CN206222340U (en) 2016-11-27 2016-11-27 A kind of formaldehyde exhaust combustion and heat recovery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621308323.8U CN206222340U (en) 2016-11-27 2016-11-27 A kind of formaldehyde exhaust combustion and heat recovery system

Publications (1)

Publication Number Publication Date
CN206222340U true CN206222340U (en) 2017-06-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621308323.8U Withdrawn - After Issue CN206222340U (en) 2016-11-27 2016-11-27 A kind of formaldehyde exhaust combustion and heat recovery system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106838937A (en) * 2016-11-27 2017-06-13 浙江双峰锅炉制造有限公司 A kind of formaldehyde exhaust combustion and heat recovery system and its operating method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106838937A (en) * 2016-11-27 2017-06-13 浙江双峰锅炉制造有限公司 A kind of formaldehyde exhaust combustion and heat recovery system and its operating method

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