CN206669780U - A kind of efficient boiler flue gas purification recovery system - Google Patents

Abstract

A kind of efficient boiler flue gas purification recovery system is the utility model is related to, it includes coal-burning boiler and energy-saving appliance, and waste-heat recovery device is provided between coal-burning boiler and energy-saving appliance, and the outlet flue of the energy-saving appliance is connected with cigarette ash deduster；Blowning installation is provided with the energy-saving appliance, the blowning installation is connected by the purging interface set on the energy-saving appliance with air compressor；Blowning installation includes hemisphere face, sealing surface and closed cavity；The hemisphere face is provided with passage.The utility model can by the heat ratio in coal-fired boiler tail gas more thoroughly reclaim, and can effectively remove the solid granulates in flue gas and most poisonous and harmful substance；Blowning installation can improve the heat exchange efficiency of equipment.And entirely purification-recovery system is simple in construction, cost is relatively low, exploitativeness is strong, has important application prospect.

Description

A kind of efficient boiler flue gas purification recovery system

Technical field

It the utility model is related to heat supply process field, and in particular to a kind of efficient boiler flue gas purification recovery system.

Background technology

Boiler heating system is equipment essential in northern area daily life, and wherein gas boiler belongs to extremely normal Heating boiler.

It is well known that the current most of area of China, especially its air matter of the northern area with heating system Dramatic decrease is measured, haze sky can be found everywhere.Therefore, the exhaust emission standard control at present to heating system is more and more stricter, main Consider two aspects, i.e. exhaust temperature and gas cleaning degree, the high flue gas of temperature and without the flue gas purified to air Quality and whole environmental system have important influence.

However, there is presently no gas boiler exhaust treatment system effective, that implementation is strong, cost-effective.And save Device is applied on gas fired-boiler back-end ductwork, the device that can be reclaimed to the preheating of flue gas.But due to that can contain in flue gas There are some Dusts, run time can generate laying dust on the tube wall in air preheater afterwards for a long time, be set so as to have impact on Standby heat exchange efficiency, reduce the efficiency of equipment.

The content of the invention

In view of this, the purpose of this utility model is to provide a kind of efficient boiler flue gas purification recovery system, to solve The deficiency mentioned in the prior art.

The purpose of this utility model is to be achieved through the following technical solutions：

A kind of efficient boiler flue gas purification recovery system, it includes coal-burning boiler, the row of being connected with the coal-burning boiler Except the smoke discharging pipe of flue gas caused by coal-burning boiler, the smoke discharging pipe is provided with the energy-saving appliance for being capable of Mist heat recovering,

Waste-heat recovery device is provided with smoke discharging pipe between the coal-burning boiler and energy-saving appliance, the energy-saving appliance goes out Mouth is connected with cigarette ash deduster；

Be provided with blowning installation in the energy-saving appliance, the blowning installation by the purging interface that is set on the energy-saving appliance and Air compressor connects；The blowning installation includes hemisphere face, sealing surface and the envelope being made up of the hemisphere face and sealing surface Closed chamber body；The hemisphere face is provided with multiple ventilations that can be sprayed onto the air in the closed cavity outside the hemisphere face Hole.

Further, one end of the sealing surface is connected with the free margins of the hemisphere face surrounding, the other end of sealing surface Converge at connecting portion and be connected with the connecting portion；The connecting portion is connected with the air compressor so that air compressor energy It is enough to be delivered to air in the closed cavity by connecting portion.

Further, the air jet pipe that the air in closed cavity can be sprayed is provided with each passage, The air jet pipe is arranged on the hemispherical convex surface.

Further, the upper surface of the connecting portion is provided with the clamping side to stretch out, and the clamping side can be connected to The purging interface both sides.

Further, the purging interface is rectangle, and it is arranged at the upper surface of the energy-saving appliance in a gap；If Being provided with the lower surface on the clamping side being placed in above the purging interface both sides can freely rotate and can be along institute State the sliding part of the purging Slideslip of interface two.

Further, axis hole is provided with the axis of the sliding part, being provided with the axis hole can be in the axis hole freely The axle of rotation, the both ends of the axle are fixedly connected with the clamping side.

Further, the energy-saving appliance upper surface of the purging interface both sides, which is provided with, can accommodate what the sliding part slided Groove.

Further, the waste-heat recovery device includes heat insulation wall and is arranged at the import at the heat insulation wall both ends and goes out Mouthful, for that can place the hot chamber that takes for taking thermal medium in the heat insulation wall, described to take hot intracavitary to be provided with smoke evacuation path, the smoke evacuation is led to Inlet and outlet of the both ends on road respectively with the heat insulation wall both ends is connected.

Further, it is described smoke evacuation path in broken line type, S types or screw type be arranged at described in take hot intracavitary.

Further, the cigarette ash deduster includes insulation shell, in the insulation shell by smoke inlet to outlet flue according to It is secondary to be provided with heat-resisting baffling filter and netted filtering device.

Further, the heat-resisting baffling filter includes multiple baffles that setting is moved towards along flue gas；The net Mesh aperture on shape filter is 0.5~20nm.

Further, the outlet flue of the cigarette ash deduster can also be connected with cyclone separator.

The utility model at least has the advantages that：

1. the boiler flue gas purification recovery system with cleaner in the utility model can be filled by waste heat recovery Put with energy-saving appliance use in conjunction, so as to by the heat ratio in coal-fired boiler tail gas more thoroughly reclaim, heat is not arranged It is green into air, and these heats can be subjected to recycling, more save.

2. the utility model has carried out certain improvement to energy-saving appliance, i.e., set blowning installation to make it have thereon and remove Dirt function, the dust deposited in energy-saving appliance can thoroughly be purged, so as to reduce in energy-saving appliance on heat-exchanging tube bundle Laying dust, improves the heat exchange efficiency of equipment, and extends the life-span, energy-conserving and environment-protective.And the blowning installation structure setting is ingenious, cost Low, easy to use, practicality is extremely strong.

3. the utility model can be carried out more thoroughly clear by cigarette ash deduster etc. to the solid particle in flue gas Remove, clearance rate can reach more than 98%, while can also be purged in flue gas 80% or so poisonous and hazardous material.

Boiler flue gas purification recovery system in the utility model is simple in construction, cost is relatively low, and exploitativeness is strong, has weight The application prospect wanted.

Brief description of the drawings

Fig. 1 is the schematic diagram of the boiler flue gas purification recovery system described in the utility model embodiment；

Fig. 2 is the schematic diagram of the boiler flue gas purification recovery system described in the utility model another embodiment；

Fig. 3 is the structural representation of the blowning installation described in the utility model embodiment；

Fig. 4 is the top view of the energy-saving appliance described in the utility model embodiment；

Fig. 5 is Fig. 4 B-B ' sectional views；

Fig. 6 is the mplifying structure schematic diagram at A in Fig. 5；

Fig. 7 is that the structure of the waste-heat recovery device containing screw type smoke evacuation path described in the utility model embodiment is shown It is intended to；

Fig. 8 is the structural representation of the waste-heat recovery device containing S types smoke evacuation path described in the utility model embodiment Figure；

Fig. 9 is that the structure of the waste-heat recovery device containing broken line type smoke evacuation path described in the utility model embodiment is shown It is intended to；

Figure 10 is the structural representation of the cigarette ash deduster described in the utility model embodiment；

Figure 11 is the top view of the cigarette ash deduster described in the utility model embodiment.

In figure, 1, coal-burning boiler, 2, waste-heat recovery device, 3, energy-saving appliance, 4, cigarette ash deduster, 5, cyclone separator, 6, Smoke discharging pipe, 21, heat insulation wall, 22, take hot chamber, 23, smoke evacuation path, 24, gas approach, 25, exhanst gas outlet, 26, take thermal medium Import, 27, take thermal medium outlet；30th, interface is purged, 31, groove, 32, sealing surface, 33, hemisphere face, 34, air jet pipe, 35, even Socket part, 38, closed cavity, 39, gas pipeline, 41, insulation shell, 42, heat-resisting baffling filter, 43, netted filtering device, 44th, support frame, 45, flue dust receptacle, 351, clamping side, 352, sliding part, 353, axle, 421, baffle.

Embodiment

The technical scheme in the embodiment of the utility model is clearly and completely described below, it is clear that described reality It is the utility model part of the embodiment to apply example, rather than whole embodiments.Embodiment of the present utility model presented below Detailed description be not intended to limit claimed the scope of the utility model, but be merely representative of of the present utility model selected Embodiment.Based on the embodiment in the utility model, this area commonsense method personnel are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Embodiment 1

As shown in figure 1, a kind of efficient boiler flue gas purification recovery system, it includes coal-burning boiler 1, the coal-burning boiler The smoke discharging pipe 6 for excluding flue gas caused by coal-burning boiler 1 is connected with 1, the smoke discharging pipe 6 is provided with can be more than recovered flue gas The energy-saving appliance 3 of heat, waste-heat recovery device 2, the section are provided with the smoke discharging pipe 6 between the coal-burning boiler 1 and energy-saving appliance 3 The outlet flue of energy device 3 is connected with cigarette ash deduster 4；

It is provided with blowning installation in the energy-saving appliance 3, the blowning installation passes through the purging interface that is set on the energy-saving appliance 3 30 are connected with air compressor, then air compressor can be sprayed into air in energy-saving appliance 3 by blowning installation, so as to right The dust accumulated in energy-saving appliance 3 is purged.

Waste-heat recovery device 2 can be by taking thermal medium to take away the heat in flue gas, and it can be water etc. to take thermal medium.

Cigarette ash deduster 4 can be by the solid particle in the flue gas for draining into air, and such as dust is purged, in flue gas Many poisonous and hazardous materials are attached on solid particle, therefore, also can largely be got on by cigarette ash deduster 4 Except the poisonous and hazardous material of part.

As shown in Fig. 2 ~ 6, the blowning installation includes hemisphere face 33, sealing surface 32 and by the hemisphere face 33 and closing The closed cavity 38 that face 32 is formed；Then the profile of the blowning installation is in sector.

One end of the sealing surface 32 is connected with the free margins of the surrounding of hemisphere face 33, the other end convergence of sealing surface 32 It is connected at connecting portion 35 and with the connecting portion 35；Connecting portion 35 is provided with the through hole being connected with air compressor, therefore described Connecting portion 35 is connected with the air compressor enables air compressor that air is delivered into the envelope by connecting portion 35 In closed chamber body 38；

Be evenly arranged with the hemisphere face 33 multiple can be sprayed onto the hemisphere by the air in the closed cavity 38 Passage outside face 33.Then by these passages, the air in air compressor can be blown into energy-saving appliance 3.

The air jet pipe 34 that the air in closed cavity can be sprayed, the jet are provided with each passage Pipe 34 is arranged on the convex surface of the hemisphere face 33 (i.e. on the lateral surface of hemisphere face 33).

Then need to sweep when blowing the laying dust in energy-saving appliance 3, open air compressor, the air compressor passes through gas pipeline 39 It is connected with connecting portion, then the air in the air compressor by gas pipeline 39 and then delivers to closing chamber by connecting portion 35 again In body 38, the air in closed cavity 38 is sprayed onto in energy-saving appliance 3 by air jet pipe 34 again, and energy-saving appliance 3 is purged；Hemisphere face The setting of 33 structure can carry out cleaning to different directions makes cleaning more thorough.

As further preferably embodiment, the upper surface of the connecting portion 35 is provided with the clamping side to stretch out 351, the clamping side 351 can be connected to purging interface 30 both sides, and the both sides of purging interface 30 herein are close to purging On the upper surface of the energy-saving appliance 3 of 30 symmetrical both sides of interface, particular location can be found in accompanying drawing, can be made entirely by the clamping side 351 Blowning installation is fixed and is connected on the energy-saving appliance 3.

As further preferably embodiment, the purging interface 30 is rectangle, and it is looked sets in a gap It is placed in the upper surface of the energy-saving appliance 3.

It is connected on the lower surface on the clamping side 351 of purging interface 30 both sides and is provided with and can freely rotate simultaneously Can be along the sliding part 352 of purging 30 liang of Slideslips of interface.Specifically, axle is provided with the axis of the sliding part 352 Hole, the axle 353 that can be freely rotated in the axis hole, the both ends of the axle 353 and the clamping side 351 are inserted with the axis hole It is fixedly connected.The upper surface of energy-saving appliance 3 of purging interface 30 both sides, which is provided with, can accommodate the ditch that the sliding part 352 slides Groove 31.Then slidably the nearly all place in the inside of energy-saving appliance 3 is equal by sliding part 352 and in groove 31 for blowning installation It can be purged, it is very convenient, efficient.

Sliding part 352 can be the cylinder of spheroidal, ellipse, cylinder or circular shape, the cylinder of circular shape Shape is most long for the diameter of middle, and its diameter is extended from the middle to both sides and is shortened successively, its diameter is most short at both ends.

As further preferably embodiment, the connecting portion 35 may be disposed at the centre of sphere of hemisphere face 33.

As further preferred embodiment, as shown in Fig. 2 the outlet flue of the cigarette ash deduster 4 can also be with rotation Wind separator 5 connects, and so as to thoroughly be removed to the solid particle in flue gas, clearance rate can almost reach 100%.

When it is implemented, if purging interface 30 is that can be connect in a slot-shaped structure, blowning installation along purging Mouthfuls 30 slide, then, can be in purging interface 30 or one scalable or push-and-pull baffle plate of upper setting causes when specifically used Groove can be blocked in the not used time, naturally it is also possible to blocked with common plank or sheet metal etc., in practice, in fact, Even if not stopping the effect of also not interfering with energy-saving appliance 3.

Embodiment 2

On the basis of embodiment 1 or embodiment 2, as shown in Fig. 7 ~ 9, the concrete structure of the waste-heat recovery device 2 is： It includes heat insulation wall 21 and is arranged at the gas approach 24 and exhanst gas outlet 25 at the both ends of heat insulation wall 21, in the heat insulation wall 21 For that can place the hot chamber 22 that takes for taking thermal medium, described take is provided with smoke evacuation path 23 in hot chamber 22, and the two of the smoke evacuation path 23 End is connected with the gas approach 24 and exhanst gas outlet 25 at the both ends of heat insulation wall 21 respectively.In the institute provided with the one end of exhanst gas outlet 25 Heat insulation wall 21 is stated provided with thermal medium inlet 26 is taken, is provided with the heat insulation wall 21 provided with the one end of gas approach 24 and takes hot Jie Matter outlet 27.

Described to take thermal medium for water or salt solution etc., then the water etc. takes the heat that thermal medium can be in flue gas to take away so as to will Heat, which is stored in, to be taken in thermal medium, and this takes heat in thermal medium is repeatable to utilize, and such as uses heat user as being supplied to.

It is described smoke evacuation path 23 preferably in broken line type, snake type (i.e. S types) or screw type be arranged at described in take in hot chamber 22, it is excellent Select S types or screw type, heat exchange coefficient is higher.

Embodiment 3

On the basis of embodiment 1, embodiment 2 or embodiment 3, as shown in Figure 10 ~ 11, the cigarette ash deduster 4 includes Insulation shell 41, the insulation shell 41 is interior to be sequentially provided with heat-resisting baffling filter 42 and heat-resistant net by smoke inlet to outlet flue Shape filter 43.

The heat-resisting baffling filter 42 includes multiple baffles 421 that setting is moved towards along flue gas.By changing cigarette Make leave with rage to flue gas and the multiple impacts of baffle 421 is made, so that the solid particles sediment in flue gas.

Mesh aperture on the netted filtering device 43 is 0.5~20nm, and ultrafine solid particle can be entered Row filtering.

The bottom of the insulation shell 41 is provided with the flue dust storage inside support frame 44 and the connection insulation shell 41 Device 45, then it can be fallen into flue dust receptacle 45 by particles such as the cigarette ashes that is deposited in cigarette ash deduster 4.

Then in the utility model, flue gas respectively enters waste-heat recovery device 2 and energy-conservation after being discharged from coal-burning boiler 1 Device 3, waste-heat recovery device 2 and energy-saving appliance 3 reclaim to the waste heat in flue gas, and the later flue gas of recovery heat passes through cigarette ash again Deduster 4, the cigarette ash deduster 4 are purged to the solid particle in flue gas so that the flue gas being discharged into air has obtained most The purification of big degree, environmental protection, is advantageous to the protection of environment.And according to actual conditions, the flue gas come out from cigarette ash deduster 4 is also Can use cyclone separator 5 carry out again more thoroughly remove solid particle.

In the specific implementation, the energy-saving appliance 3 in the utility model is also known as economizer.Concrete structure etc. can be found in existing skill Art, the utility model are not specifically limited to the concrete structure of energy-saving appliance.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this area For technical staff, the utility model can have various changes and change.All institutes within spirit of the present utility model and principle Any modification, equivalent substitution and improvements of work etc., should be included within the scope of protection of the utility model.

Claims (10)

1. a kind of efficient boiler flue gas purification recovery system, it includes coal-burning boiler, exclusion is connected with the coal-burning boiler The smoke discharging pipe of flue gas caused by coal-burning boiler, the smoke discharging pipe are provided with the energy-saving appliance for being capable of Mist heat recovering, and it is special Sign is：

Waste-heat recovery device, the outlet flue of the energy-saving appliance are provided with smoke discharging pipe between the coal-burning boiler and energy-saving appliance It is connected with cigarette ash deduster；

It is provided with blowning installation in the energy-saving appliance, the blowning installation passes through the purging interface and air that are set on the energy-saving appliance Compressor connects；The blowning installation includes hemisphere face, sealing surface and the closing chamber being made up of the hemisphere face and sealing surface Body；The hemisphere face is provided with multiple passages that can be sprayed onto the air in the closed cavity outside the hemisphere face.

2. efficient boiler flue gas purification recovery system according to claim 1, it is characterised in that：The one of the sealing surface End is connected with the free margins of the hemisphere face surrounding, and the other end of sealing surface is converged at connecting portion and is connected with the connecting portion； The connecting portion is connected with the air compressor so that air can be delivered to the envelope by air compressor by connecting portion In closed chamber body.

3. efficient boiler flue gas purification recovery system according to claim 2, it is characterised in that：Each passage On be provided with the air jet pipe that the air in closed cavity can be sprayed, the air jet pipe be arranged at the hemispherical convex surface On.

4. efficient boiler flue gas purification recovery system according to claim 3, it is characterised in that：The connecting portion it is upper End face is provided with the clamping side to stretch out, and the clamping side can be connected to the purging interface both sides.

5. efficient boiler flue gas purification recovery system according to claim 4, it is characterised in that：The waste heat recovery dress The inlet and outlet at the heat insulation wall both ends is put including heat insulation wall and be arranged at, is that can place to take thermal medium in the heat insulation wall Take hot chamber, described to take hot intracavitary to be provided with smoke evacuation path, the both ends of the smoke evacuation path are entered with the heat insulation wall both ends respectively Mouth and outlet connection.

6. efficient boiler flue gas purification recovery system according to claim 5, it is characterised in that：It is described smoke evacuation path be in Broken line type, S types or screw type take hot intracavitary described in being arranged at.

7. efficient boiler flue gas purification recovery system according to claim 6, it is characterised in that：The cigarette ash deduster Including insulation shell, heat-resisting baffling filter and netted filtering are sequentially provided with by smoke inlet to outlet flue in the insulation shell Device.

8. efficient boiler flue gas purification recovery system according to claim 7, it is characterised in that：The heat-resisting baffling mistake Filter device includes multiple baffles that setting is moved towards along flue gas.

9. efficient boiler flue gas purification recovery system according to claim 7, it is characterised in that：The netted filtering dress The mesh aperture put is 0.5~20nm.

10. the efficient boiler flue gas purification recovery system according to any one of claim 1 ~ 9, it is characterised in that：Institute Stating the outlet flue of cigarette ash deduster can also be connected with cyclone separator.