CN212362073U - Composite flue gas desulfurization, denitrification, whitening and dedusting integrated equipment - Google Patents

Abstract

The utility model discloses a compound flue gas desulfurization denitration takes off white dust removal integration equipment, include: the device comprises a heat taking heat exchanger, a dust remover, a denitration device, a desulfurization tower, a condensation dust removing device, a heating heat exchanger and a chimney which are sequentially arranged along the airflow direction; the condensation dust removing device comprises a shell, and an air inlet chamber, a dust removing chamber, a turbulent flow chamber and a condensation chamber which are sequentially arranged in the shell from bottom to top, wherein an air inlet distribution pipe communicated with the air inlet chamber is arranged on the periphery of the lower part of the lower shell. The flue gas is subjected to heat recovery by a heat-taking heat exchanger, dust removal by a dust remover, denitration by a denitration device, desulfurization by a desulfurization tower, condensation and cooling by a condensation and dust-removal device, secondary dust removal and heating by a heating heat exchanger for whitening, so that the aims of desulfurization, denitration, dust removal and whitening of the flue gas can be fulfilled; the utility model discloses a condensation dust collector can also get rid of the particulate matter in the flue gas once more when carrying out the condensation cooling to the flue gas, further reduces the content of particulate matter in the flue gas, can improve whole equipment's flue gas and take off white dust removal treatment effect.

Description

Composite flue gas desulfurization, denitrification, whitening and dedusting integrated equipment

Technical Field

The utility model relates to a waste gas treatment field, in particular to compound flue gas desulfurization denitration takes off white dust removal integration equipment.

Background

Flue gas generated by coal-fired boilers in power plants, sintering machines in steel plants and other furnaces burning fossil fuels contains a large amount of sulfur dioxide and nitrogen oxides, and if the flue gas is directly discharged into the atmosphere, the air can be polluted, so that environmental disasters such as acid rain and the like are formed. And because a large amount of particles exist in the flue gas, the flue gas can be discharged after desulfurization, denitrification and dust removal.

In addition, when the saturated wet flue gas discharged from the chimney contacts with the ambient air with lower temperature, in the process of cooling the flue gas, the water vapor contained in the flue gas is supersaturated and condensed, and condensed water drops refract and scatter light, so that the smoke plume presents white or gray, which is called as 'wet smoke plume' (commonly called 'big white smoke'). Therefore, the method is also necessary for eliminating white smoke, and the dehumidification and the whitening are to eliminate the generation of large white smoke. The smoke whitening usually adopts a smoke condensing and reheating technology, namely, the absolute moisture content in the white smoke is reduced by cooling, saturated water vapor in the smoke is separated out to form condensed water, and then the smoke is reheated to reduce the relative moisture content of the white smoke, so that smoke plume is eliminated.

At present, the requirements of desulfurization, denitrification, whitening and dust removal are provided for flue gas treatment, and related equipment also appears, but the existing equipment has the problems of poor whitening effect or poor dust removal effect and the like. For example, patent 201910240688.3 discloses an industrial flue gas desulfurization, denitrification and de-whitening device, which performs desulfurization, denitrification, de-whitening and dust removal through a desulfurization tower, an SCR reactor and a dust remover, but it is difficult to obtain satisfactory dust removal effect through only one dust remover, and in addition, when desulfurization treatment is performed, new particulate matters are easily generated, which lacks a reliable scheme for removing the particulate matters.

A more reliable solution is now needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a compound flue gas desulfurization denitration takes off white dust removal integration equipment.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a compound flue gas desulfurization denitration takes off white dust removal integration equipment, includes: the device comprises a heat taking heat exchanger, a dust remover, a denitration device, a desulfurization tower, a condensation dust removing device, a heating heat exchanger and a chimney which are sequentially arranged along the airflow direction;

the condensing dust removal device comprises a shell, and an air inlet chamber, a dust removal chamber, a turbulent flow chamber and a condensing chamber which are arranged in the shell from bottom to top in sequence,

the shell comprises a conical lower shell and a cylindrical upper shell which are communicated with each other, the air inlet chamber, the dust removal chamber and the turbulence chamber are arranged in the lower shell, and the condensation chamber is arranged in the upper shell;

the bottom of casing is provided with the drain down, the lower part periphery of casing down be provided with the gas distribution pipe that admits air of inlet chamber intercommunication, the gas distribution pipe that admits air including admit air the person in charge, with the annular gas distribution pipe and the even interval connection that admit air be responsible for the connection are in a plurality of gas distribution branch pipes on the interior circumference outer wall of annular gas distribution pipe, the gas distribution branch pipe give vent to anger the end with the outer wall connection of casing down, just the gas distribution branch pipe give vent to anger the end with the outer wall of casing is tangent down.

Preferably, a plurality of dust removing cavities communicated with the air inlet chamber and the turbulent flow chamber are arranged in the dust removing chamber, and a plurality of dust blocking assemblies are arranged on the inner wall of each dust removing cavity at intervals; the dust blocking components on the inner walls of two sides of the same dust removing cavity are arranged in a staggered mode.

Preferably, keep off the dirt subassembly and include the rigid coupling connecting block, rotatable coupling on the inner wall in dust removal chamber keep off dirt board on the connecting block, the rigid coupling is in bracing piece and connection on the inner wall in dust removal chamber are in the first spring between bracing piece and the fender dirt board.

Preferably, the tail end of the dust baffle plate is inclined downwards, and the included angle between the dust baffle plate and the inner wall of the dust removing cavity where the dust baffle plate is located is 30-60 degrees.

Preferably, a serpentine condenser pipe is arranged in the condenser chamber, the serpentine condenser pipe comprises a condenser pipe body and a plurality of heat conduction branch pipes arranged on the condenser pipe body at intervals, each heat conduction branch pipe comprises a distribution bulb, a central branch pipe connected with the distribution bulb and a plurality of arc-shaped branch pipes connected with the outer wall of the distribution bulb, the inlet end of the distribution bulb is communicated with the outlet end of the condenser pipe body at the upstream, the outlet end of the central branch pipe is communicated with the inlet end of the condenser pipe body at the downstream, and the outlet ends of the arc-shaped branch pipes are communicated with the side wall of the condenser pipe body at the downstream.

Preferably, a plurality of spoilers which are obliquely arranged are arranged in the spoiler chamber, included angles between the spoilers and the vertical direction are 50-80 degrees, and a plurality of scraper assemblies are arranged on the first surface of each spoiler;

the upper end and the lower end of the turbulence chamber are respectively provided with a first filter plate and a second filter plate which are fixedly connected with the inner wall of the lower shell, and the upper end and the lower end of the turbulence plate are respectively connected with the first filter plate and the second filter plate.

Preferably, the squeegee assembly includes a driving blade rotatably coupled to the first surface of the spoiler by a first rotation shaft and a squeegee rotatably coupled to an inner bottom surface of the driving blade.

Preferably, an installation groove is formed in the bottom surface of the inner side of the driving blade, an installation block which is used for being inserted into the installation groove in a matched mode is arranged on the upper side surface of the scraping plate, and the installation block is rotatably arranged in the installation groove through a second rotating shaft.

Preferably, two ends of the second rotating shaft are connected with the inner wall of the mounting groove, and the mounting block is rotatably sleeved on the second rotating shaft;

the cross section of the mounting groove is arc-shaped, so that the mounting block can rotate in the mounting groove;

two second springs are arranged between the bottom surface of the inner side of the driving blade and the upper side surface of the scraper blade, and the two springs are symmetrically arranged on two sides of the mounting block.

Preferably, the flue gas enters from a first heat medium inlet of the heat taking heat exchanger and is discharged to the dust remover from a first heat medium outlet on the heat taking heat exchanger; a first refrigerant outlet of the heat taking heat exchanger is communicated to a second heat medium inlet of the warming heat exchanger through a first heat medium pipeline, and a first refrigerant inlet of the heat taking heat exchanger is communicated with the second heat medium outlet of the warming heat exchanger through a first refrigerant medium pipeline; and the flue gas discharged by the condensation dust removal device enters a second refrigerant inlet of the warming heat exchanger through a pipeline and is discharged from a second refrigerant outlet of the warming heat exchanger.

The utility model has the advantages that: the utility model discloses a flue gas desulfurization denitration whitening dust removal integrated equipment, flue gas through get heat exchanger recovery heat, the dust remover removes dust, denitrification facility carries out denitration treatment, the desulfurizing tower realizes the desulfurization, the condensation dust collector condensation cooling removes dust once more, the intensification heat exchanger heats in order to disappear white, can realize the purpose of the desulfurization denitration dust removal of flue gas and whitening;

the condensing dust removal device can remove the particulate matters in the flue gas again while condensing and cooling the flue gas, further reduces the content of the particulate matters in the flue gas, and can improve the flue gas whitening and dust removal treatment effect of the whole equipment;

the utility model discloses the heat that the heat exchanger of getting heat was retrieved is utilized and is heated the flue gas after the condensation, heat production in the ability make full use of equipment, the energy saving.

Drawings

FIG. 1 is a schematic structural view of the integrated equipment for desulfurization, denitrification, whitening and dust removal of composite flue gas of the present invention;

fig. 2 is a schematic structural view of the inside of a lower case according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a dust barrier assembly according to embodiment 1 of the present invention;

fig. 4 is a schematic structural view in a top view direction of an intake air distribution pipe in embodiment 1 of the present invention;

fig. 5 is a schematic side view of a spoiler according to embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a squeegee assembly according to embodiment 1 of the present invention;

fig. 7 is a schematic view of the enlarged partial structure at a in fig. 6 according to the present invention;

fig. 8 is a schematic side view of a squeegee assembly according to embodiment 1 of the present invention;

fig. 9 is a schematic view of a state in which the scraper assembly of example 1 of the present invention is in contact with particulate matter;

FIG. 10 is a schematic view showing a state where a scraper assembly is in contact with particulate matter in example 1 of the present invention

Fig. 11 is an internal structural view of an upper case according to embodiment 2 of the present invention;

fig. 12 is a schematic side view of a heat conducting branch pipe section according to embodiment 2 of the present invention;

fig. 13 is a schematic structural view of a heat conducting branch pipe section in a top view direction according to embodiment 2 of the present invention.

Description of reference numerals:

1-heat-taking heat exchanger; 10-a first heating medium inlet; 11-first heating medium outlet; 12-a first refrigerant outlet; 13 — a first refrigerant inlet; 14 — a first heat medium stream; 15-first refrigerant medium pipeline; 16-medium circulation pump;

2-a dust remover;

3-a denitration device;

4-a desulfurizing tower; 40-a spray header; 41-supply pump; 42-infusion pipeline;

5, a condensing dust removal device; 50-a housing; 51-an upper housing; 52-lower housing; 53-an inlet chamber; 54-dust removing chamber; 55-a turbulent flow chamber; 56-a condensation chamber; 57-a sewage draining outlet; 58-air inlet and distribution pipe; 59-a sedimentation tank;

540-dedusting cavity; 541-a dust blocking component; 542-connecting block; 543-dust board; 544-support bar; 545-a first spring; 546-pin shaft;

550-spoiler; 551-a first surface of a spoiler; 552-a squeegee assembly; 553 — a first filter plate; 554 — a second filter plate; 555-particles;

5520 — a first shaft; 5521-driving vanes; 5522-a squeegee; 5523-a second spring; 5524-mounting grooves; 5525-mounting block; 5526-a second shaft; 5527-a spindle cap;

560-serpentine condenser tube; 561-condensation pipe body; 562-heat conducting branch sections; 563-allocate bulb; 564 — a central branch tube; 565 — arc branch; 566-return water line; 567-circulating water pump; 568-cooling tower;

580-main pipe for air intake; 581-annular gas distribution pipe; 582-distributing gas branch pipes;

6-heating heat exchanger; 60-a second heating medium inlet; 61-a second heating medium outlet; 62-a second refrigerant inlet; 63-a second refrigerant outlet;

7, a chimney; 8, a pipeline; 80, a fan.

Detailed Description

The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1, the composite integrated equipment for desulfurization, denitrification, whitening and dust removal of flue gas of the embodiment comprises: the heat-taking heat exchanger 1, the dust remover 2, the denitration device 3, the desulfurizing tower 4, the condensing dust-removing device 5, the heating heat exchanger 6 and the chimney 7 are sequentially connected and arranged along the airflow direction through a pipeline 8. A fan 80 is also arranged on the pipeline 8 after passing through the dust remover 2.

The utility model discloses an integral flue gas treatment process does: under the action of the fan 80, the flue gas is cooled and heat exchanged through the heat taking heat exchanger 1 to fully utilize the waste heat in the flue gas, then enters the dust remover 2 for primary dust removal, then enters the desulfurization tower 4 for desulfurization treatment, and then enters the denitrification device 3 for denitrification treatment; the treated flue gas enters a condensing and dedusting device 5, is condensed and cooled (absolute moisture content in white smoke is reduced through cooling, saturated water vapor in the flue gas is separated out to form condensed water), is heated through a heating heat exchanger 6 again (the flue gas is heated again to reduce the relative moisture content of the white smoke, so that smoke plume is eliminated), so that the white smoke is eliminated, and finally the flue gas is discharged from a chimney 7, so that the purposes of desulfurization, denitrification, whitening and dedusting of the flue gas are achieved; and dust removal is still carried out once more when condensing dust collector 5 carries out the condensation cooling, has further reduced the content of particulate matter in the flue gas.

Wherein, the dust remover 2 can select conventional products, and a bag type dust remover is adopted in the embodiment. The denitration device 3 may also be a conventional product, such as a denitration tower or other denitration equipment, and in this embodiment, a conventional SCR reactor is used. The desulfurizing tower 4 adopts a conventional alkali liquor absorption mode, a spray head 40 is arranged in the desulfurizing tower 4, and the spray head is connected with an alkali liquor supply device (comprising a supply pump 41, a liquid conveying pipeline 42 and the like). The alkali solution can be sodium hydroxide solution or ammonia water.

Wherein, condensation dust collector 5 is used for carrying out the condensation cooling to the flue gas, can also get rid of again particulate matter (dust etc.) in the flue gas simultaneously, further reduces the content of particulate matter in the flue gas. In the preferred embodiment, the condensing and dust-removing device 5 comprises a housing 50, and an air inlet chamber 53, a dust removing chamber 54, a turbulent flow chamber 55 and a condensing chamber 56 which are arranged in the housing 50 from bottom to top in sequence. The flue gas that desulfurizing tower 4 was discharged gets into air inlet chamber 53, then upward flow discharges again through clean room 54, vortex chamber 55 and condensing chamber 56 in proper order, and clean room 54 removes dust to the flue gas, and vortex chamber 55 has dust removal and condensation cooling's function concurrently, and condensing chamber 56 cools down the flue gas condensation to make the water analysis in the flue gas go out.

The foregoing is a general idea of the present invention, and more specific embodiments thereof are provided below for further explanation.

Example 1

Referring to fig. 1 to 10, in the present embodiment, a housing 50 includes a cone-shaped lower housing 52 and a cylinder-shaped upper housing 51 which are communicated with each other, an air inlet chamber 53, a dust removal chamber 54, and a spoiler chamber 55 are disposed in the lower housing 52, and a condensation chamber 56 is disposed in the upper housing 51;

the bottom of the lower housing 52 is provided with a drain 57, and the drain 57 is connected to a settling tank 59 through a pipe 8. The particles and condensed water falling in the dust chamber 54 are discharged to the settling tank 59 through the drain outlet 57, and the particles are separated by settling in the settling tank 59, so that water can be recovered through overflow.

The lower periphery of the lower shell 52 is provided with an air inlet distribution pipe 58 communicated with the air inlet chamber 53, the air inlet distribution pipe 58 comprises an air inlet main pipe 580, an annular air distribution pipe 581 connected with the air inlet main pipe 580, and a plurality of air distribution branch pipes 582 uniformly connected to the inner periphery and outer wall of the annular air distribution pipe 581 at intervals, the air outlet ends of the air distribution branch pipes 582 are connected with the outer wall of the lower shell 52, and the air outlet ends of the air distribution branch pipes 582 are tangent to the outer wall of the lower shell 52.

Referring to fig. 4, after entering from the inlet main pipe 580, the flue gas enters the inlet chamber 53 of the lower housing 52 through the plurality of air distribution branch pipes 582 in a tangential direction, so that a rotational flow is generated in the inlet chamber 53, and the flue gas entering the inlet chamber 53 has an upward flow velocity on one side and also has a rotational flow, so that the flue gas spirally rises, and the turbulence degree of the flue gas is increased. The dust removal of the flue gas in the upper dust removal chamber 54 and the turbulence chamber 55 can be facilitated.

In a further preferred embodiment, a plurality of dust removing cavities 540 communicated with the air inlet chamber 53 and the turbulent flow chamber 55 are arranged in the dust removing chamber 54, and a plurality of dust blocking assemblies 541 are arranged on the inner wall of the dust removing cavity 540 at intervals; the dust blocking components 541 on the inner walls of the two sides of the same dust removing chamber 540 are arranged in a staggered manner. The dust blocking assembly 541 includes a connecting block 542 fixed to the inner wall of the dust removing chamber 540, a dust blocking plate 543 rotatably connected to the connecting block 542 (in this embodiment, the dust blocking plate is rotatably connected by a pin 546), a supporting rod 544 fixed to the inner wall of the dust removing chamber 540, and a first spring 545 connected between the supporting rod 544 and the dust blocking plate 543. The first springs 545 are arranged below the corresponding dust blocking plates 543, the tail ends of the dust blocking plates 543 are inclined downwards, and the included angle between each dust blocking plate 543 and the inner wall of the dust removing cavity 540 where the dust blocking plate 543 is located is 30-60 degrees. Further preferably, the end of the dust blocking plate 543 exceeds the center line of the dust removing chamber 540, so as to improve the dust removing effect. It should be understood that the size of the dust blocking plate 543 needs to be matched with the size of the dust removing chamber 540 where the dust blocking plate 543 is located, for example, the dust removing chambers 540 on both sides have smaller volumes, and the size of the dust blocking plate 543 needs to be correspondingly reduced.

In the process that the flue gas moves upwards in the dust removing cavity 540, the flue gas contacts with the dust blocking plates 543 arranged on the inner walls of the two sides of the dust removing cavity 540 in a staggered mode, most particles in the flue gas collide with the dust blocking plates 543 to fall down, are separated from the flue gas and enter the sewage outlet 57 of the air inlet chamber 53. Wherein, the first spring 545 supports the dust-blocking plate 543, when no smoke enters, the included angle between the dust-blocking plate 543 and the inner wall of the dust-removing chamber 540 where the dust-blocking plate 543 is located is 30-60 degrees; due to the flexible support of the first spring 545, when smoke flows from bottom to top, the dust blocking plate 543 is stressed to rotate upwards relative to the mounting block 5525, and when the smoke spirally rises, the acting force on the dust blocking plate 543 is suddenly reduced, and when the stress on the dust blocking plate 543 is reduced, the dust blocking plate 543 is stressed to rotate downwards relative to the mounting block 5525 under the action of the pulling force of the first spring 545; therefore, when the flue gas flows through the dust removing cavity 540, the dust blocking plate 543 can generate continuous vertical shaking under the action force of the flue gas and the first spring 545, so that on one hand, the dust blocking plate is more beneficial to blocking particles collided with the flue gas and enabling the particles to fall down; on the other hand, the particles and the condensed water adhered to the dust-blocking plate 543 can be shaken off, and the particles and the condensed water are prevented from being adhered to the dust-blocking plate 543. In this embodiment, produce the flue gas that the whirl rises through air inlet chamber 53 (the cigarette whirl rises, can increase the particulate matter in the flue gas and keep off the collision probability and the collision strength of dirt board 543, do benefit to the whereabouts separation of particulate matter), with the ingenious cooperation of the fender dirt subassembly 541 in the clean room 54, can effectively block out most particulate matter in the flue gas, make its whereabouts go into drain 57, realize the separation of particulate matter and flue gas, have fine dust removal effect.

In a further preferred embodiment, a plurality of obliquely arranged spoilers 550 are arranged in the spoiler chamber 55, the included angle of the spoilers 550 with respect to the vertical direction is 50 ° to 80 °, and a first surface 551 of the spoilers (i.e. the upper surface of the upwardly facing condensation chamber 56 of the obliquely arranged spoilers 550) is provided with a plurality of scraper 5522 assemblies 552;

the upper and lower ends of the turbulent flow chamber 55 are respectively provided with a first filter plate 553 and a second filter plate 554 fixedly connected to the inner wall of the lower housing 52, and the upper and lower ends of the turbulent flow plate 550 are respectively connected to the first filter plate 553 and the second filter plate 554. The first filter plate 553 and the second filter plate 554 have filter holes for removing dust and providing support for the spoiler 550.

Since the upper part of the turbulent chamber 55 is communicated with the condensing chamber 56, and the temperature in the condensing chamber 56 is lower, the lower the temperature in the turbulent chamber 55, the lower the temperature, the flue gas in the turbulent chamber 55 will also generate partial condensed water due to temperature reduction. Part of the particles in the flue gas fall or are attached to the spoiler 550 due to the blocking of the spoiler 550, the spoiler 550 generates turbulence and blocking effects on the flue gas, and meanwhile, an attachment surface can be provided for the particles and the condensed water in the flue gas, so that the particles and the condensed water can be removed easily. Further, as the smoke cyclone rises, the collision probability and the collision strength between the particles in the smoke and the spoiler 550 can be increased, which is beneficial to the falling and separation of the particles. The flue gas passes through the turbulence chamber 55 to realize further dust removal and pre-cooling condensation.

Still further preferably, the scraper 5522 assembly 552 includes a drive blade 5521 rotatably coupled to the first surface 551 of the spoiler via a first axis of rotation 5520 and a scraper 5522 rotatably coupled to an inside bottom surface of the drive blade 5521. The upper end of the first rotation shaft 5520 is provided with a rotation shaft cap 5527 to prevent the driving blade 5521 from being separated from the first rotation shaft 5520. Under the action of the airflow of the flue gas, the driving blade 5521 rotates around the first rotating shaft 5520, so that the scraper 5522 is driven to rotate together, and the scraper 5522 scrapes the first surface 551 of the spoiler. Particulate matter and condensed water can adhere to the first surface 551 of the spoiler, and the use effect of the spoiler can be influenced if the spoiler is not cleaned for a long time. Through setting up scraper 5522 subassembly 552 in this embodiment, drive driving vane 5521 through the mobile force of flue gas and rotate, then scrape the brush through scraper 5522 of connecting on driving vane 5521 to the first surface 551 of spoiler, can scrape the particulate matter that bonds on it, also can make the comdenstion water on it drip fast simultaneously.

Further preferably, an installation groove 5524 is formed on the inner bottom surface of the driving blade 5521, an installation block 5525 for being inserted into the installation groove 5524 is disposed on the upper side surface of the scraper 5522, and the installation block 5525 is rotatably disposed in the installation groove 5524 through a second rotating shaft 5526.

Two ends of the second rotating shaft 5526 are connected with the inner wall of the mounting groove 5524, and the mounting block 5525 is rotatably sleeved on the second rotating shaft 5526; the cross section of the mounting groove 5524 is arc-shaped, so that the mounting block 5525 can rotate in the mounting groove 5524; referring to fig. 8, the mounting block 5525 can be rotated left and right within the plane of the cross section of the mounting groove 5524. Two second springs 5523 are arranged between the inner bottom surface of the driving blade 5521 and the upper side surface of the scraper 5522, and the two springs are symmetrically arranged on two sides of the mounting block 5525.

The scraping plate 5522 is mainly used for scraping off particles and condensed water adhered to the first surface 551 of the spoiler, when the particles at certain positions are firmly adhered to form a firm bulge, and when the scraping plate 5522 moves to the position, the scraping plate 5522 can rotate relative to the first surface 551 of the spoiler, so that the firm bulge can be overcome, the scraping plate 5522 can be prevented from being damaged, the scraping plate 5522 can be ensured to continuously rotate normally, and other positions of the first surface 551 of the spoiler can be scraped.

The second springs 5523 are arranged to provide a certain holding force between the scraper 5522 and the spoiler 550, the scraper 5522 can be kept in a state of being substantially perpendicular to the first surface 551 of the spoiler without rotating freely, only when the resistance force of the lower end of the scraper 5522 is larger than the acting force of the two second springs 5523, the scraper 5522 rotates to enable one of the two springs to be compressed and stretched, and when the resistance force disappears, the scraper 5522 is kept in a state of being perpendicular to the first surface 551 of the spoiler under the action of the elastic force of the two second springs 5523. For example, when particles 555 are encountered, the lower end of the scraper 5522 contacts the particles 555, one of the two second springs 5523 is compressed and stretched, and the scraper 5522 is prevented from rotating, so that the scraping force of the scraper 5522 on the particles 555 is provided, and the particles 555 are scraped off the first surface 551 of the spoiler (the scraper 5522 can rotate in a small amplitude), as shown in fig. 9. When the particles 555 are bonded firmly, the force provided by the two second springs 5523 is not enough to scrape the particles 555, and the scraper 5522 rotates to a larger extent, so that the lower end of the scraper 5522 passes over the particles 555, and the scraper 5522 is prevented from being damaged and stuck, as shown in fig. 10.

Example 2

Referring to fig. 11 to 13, based on embodiment 1, it is further preferable that in this embodiment, the heat source of the temperature-increasing heat exchanger 6 and the heat-taking heat exchanger 1 are used, so that heat generation in the equipment can be fully utilized, and energy is saved. Specifically, the flue gas enters from a first heat medium inlet 10 of the heat taking heat exchanger 1 and is discharged to the dust remover 2 from a first heat medium outlet 11 on the heat taking heat exchanger; the first refrigerant outlet 12 of the heat taking heat exchanger 1 is communicated to the second heat medium inlet 60 of the warming heat exchanger 6 through a first heat medium pipeline 814, and the first refrigerant inlet 13 of the heat taking heat exchanger 1 is communicated with the second heat medium outlet 61 of the warming heat exchanger 6 through a first refrigerant medium pipeline 815; the flue gas discharged by the condensing and dedusting device 5 enters the second refrigerant inlet 62 of the warming heat exchanger 6 through the pipeline 8 and is discharged from the second refrigerant outlet 63 of the warming heat exchanger 6.

The first heat medium pipe 814 is provided with a medium circulation pump 16. In this embodiment, water is used as the heat exchange medium. The temperature of the hot flue gas is reduced after passing through the heat taking heat exchanger 1, cold water of the heating heat exchanger 6 absorbs heat in the flue gas and then becomes hot water, and then the flue gas entering the heating heat exchanger 6 is heated, so that the heat recovered by the heat taking heat exchanger 1 is transferred to the heat taking heat exchanger 1, and the preheated flue gas is reheated.

The condensing chamber 56 is provided therein with a serpentine condenser tube 560, a water inlet end and a water outlet end of the serpentine condenser tube 560 are respectively a refrigerant inlet and a refrigerant outlet thereof, and referring to fig. 1, the serpentine condenser tube 560 is externally connected with a water return pipe 566, a circulating water pump 567 and a cooling tower 568. Cold water in the serpentine condenser pipe 560 absorbs heat of the flue gas and then is heated to become hot water, the hot water enters the cooling tower 568 through the water return pipeline 566 for cooling, and the flue gas is cooled in the process.

In this embodiment, the temperature of the flue gas entering the heat exchanger 11 is about 130-.

In a further preferred embodiment, the serpentine condenser 560 includes a condenser body 561 and a plurality of heat conducting branch pipe sections 562 disposed on the condenser body 561 at intervals, each heat conducting branch pipe section 562 includes a distribution bulb 563, a central branch pipe 564 connected to the distribution bulb 563, and a plurality of arc-shaped branch pipes 565 connected to an outer wall of the distribution bulb 563, an inlet end of the distribution bulb 563 communicates with an outlet end of the upstream condenser body 561, an outlet end of the central branch pipe 564 communicates with an inlet end of the downstream condenser body 561, and an outlet end of each arc-shaped branch 565 communicates with a side wall of the downstream condenser body 561.

The arc-shaped branch pipes 565 are arranged at regular intervals, and referring to fig. 12 and 13, in the embodiment, 4 arc-shaped branch pipes 565 are included. After entering the distribution bulb 563, the water in the upstream condenser tube body 561 is divided into 5 strands, one strand enters the downstream condenser tube body 561 from the central branch tube 564, and the other 4 strands enter the downstream condenser tube body 561 through the arc branch tubes 565. More preferably, the arc-shaped branch pipes 565 are tangential to the periphery of the condensation pipe body 561 as viewed in a radial cross section of the condensation pipe body 561, or the water in the arc-shaped branch pipes 565 generates at least a flow velocity in the tangential direction, while the central branch pipe 564 is coaxial with the condensation pipe body 561, so that the water in the central branch pipe 564 generates a flow velocity in the flow direction, and the arc-shaped branch pipes 565 generate a swirling flow, thereby making the water in the condensation pipe body 561 downstream of the heat-conducting branch pipe 562 advance in a swirling flow. The arrangement of the arc branch pipes 565 can increase the contact area of the serpentine condenser pipe 560 and the flue gas, and improve the heat exchange effect; the hydroenergy that the whirl flows produces the turbulent flow, improves the heat transfer effect, also can guarantee the velocity of flow simultaneously, guarantees heat exchange efficiency to can improve the condensation effect of snakelike condenser pipe 560 to the flue gas.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.

Claims (10)

1. The utility model provides a compound flue gas desulfurization denitration takes off white dust removal integration equipment which characterized in that includes: the device comprises a heat taking heat exchanger, a dust remover, a denitration device, a desulfurization tower, a condensation dust removing device, a heating heat exchanger and a chimney which are sequentially arranged along the airflow direction;

the condensation dust removal device comprises a shell, and an air inlet chamber, a dust removal chamber, a turbulence chamber and a condensation chamber which are sequentially arranged in the shell from bottom to top;

the shell comprises a conical lower shell and a cylindrical upper shell which are communicated with each other, the air inlet chamber, the dust removal chamber and the turbulence chamber are arranged in the lower shell, and the condensation chamber is arranged in the upper shell;

the bottom of casing is provided with the drain down, the lower part periphery of casing down be provided with the gas distribution pipe that admits air of inlet chamber intercommunication, the gas distribution pipe that admits air including admit air the person in charge, with the annular gas distribution pipe and the even interval connection that admit air be responsible for the connection are in a plurality of gas distribution branch pipes on the interior circumference outer wall of annular gas distribution pipe, the gas distribution branch pipe give vent to anger the end with the outer wall connection of casing down, just the gas distribution branch pipe give vent to anger the end with the outer wall of casing is tangent down.

2. The integrated equipment for desulfurization, denitrification, whitening and dedusting of composite flue gas according to claim 1, wherein a plurality of dedusting cavities communicating the gas inlet chamber and the turbulent flow chamber are arranged in the dedusting chamber, and a plurality of dust blocking assemblies are arranged on the inner wall of the dedusting cavity at intervals; the dust blocking components on the inner walls of two sides of the same dust removing cavity are arranged in a staggered mode.

3. The integrated equipment for desulfurization, denitrification, whitening and dedusting of composite flue gas according to claim 2, wherein the dust-blocking component comprises a connecting block fixedly connected to the inner wall of the dedusting cavity, a dust-blocking plate rotatably connected to the connecting block, a supporting rod fixedly connected to the inner wall of the dedusting cavity, and a first spring connected between the supporting rod and the dust-blocking plate.

4. The integrated equipment for desulfurization, denitrification, whitening and dedusting of composite flue gas according to claim 3, wherein the tail end of the dust baffle plate is inclined downwards, and the included angle between the dust baffle plate and the inner wall of the dedusting cavity where the dust baffle plate is arranged is 30-60 degrees.

5. The composite flue gas desulfurization, denitrification, whitening and dedusting integrated equipment as claimed in claim 1, wherein a serpentine condenser pipe is arranged in the condenser chamber, the serpentine condenser pipe comprises a condenser pipe body and a plurality of heat-conducting branch pipes arranged on the condenser pipe body at intervals, each heat-conducting branch pipe comprises a distribution bulb, a central branch pipe connected with the distribution bulb and a plurality of arc-shaped branch pipes connected with the outer wall of the distribution bulb, the inlet end of the distribution bulb is communicated with the outlet end of the condenser pipe body at the upstream, the outlet end of the central branch pipe is communicated with the inlet end of the condenser pipe body at the downstream, and the outlet ends of the arc-shaped branch pipes are communicated with the side wall of the condenser pipe body at the downstream.

6. The integrated equipment for desulfurization, denitrification, whitening and dedusting of composite flue gas as claimed in claim 1, wherein a plurality of obliquely arranged spoilers are arranged in the spoiler chamber, the included angle between the spoilers and the vertical direction is 50-80 degrees, and a plurality of scraper assemblies are arranged on the first surface of each spoiler;

the upper end and the lower end of the turbulence chamber are respectively provided with a first filter plate and a second filter plate which are fixedly connected with the inner wall of the lower shell, and the upper end and the lower end of the turbulence plate are respectively connected with the first filter plate and the second filter plate.

7. The integrated equipment for desulfurization, denitrification, whitening and dedusting of composite flue gas according to claim 6, wherein the scraper assembly comprises a driving blade rotatably connected to the first surface of the spoiler through a first rotating shaft and a scraper rotatably connected to the inner bottom surface of the driving blade.

8. The integrated equipment for desulfurization, denitrification, whitening and dedusting of composite flue gas according to claim 7, wherein the bottom surface of the inner side of the driving blade is provided with an installation groove, the upper side surface of the scraper blade is provided with an installation block which is used for being inserted into the installation groove in a matching manner, and the installation block is rotatably arranged in the installation groove through a second rotating shaft.

9. The integrated equipment for desulfurization, denitrification, whitening and dedusting of composite flue gas according to claim 8, wherein two ends of the second rotating shaft are connected with the inner wall of the mounting groove, and the mounting block is rotatably sleeved on the second rotating shaft;

the cross section of the mounting groove is arc-shaped, so that the mounting block can rotate in the mounting groove;

two second springs are arranged between the bottom surface of the inner side of the driving blade and the upper side surface of the scraper blade, and the two second springs are symmetrically arranged on two sides of the mounting block.

10. The integrated equipment for desulfurization, denitrification, whitening and dedusting of the composite flue gas as claimed in claim 1, wherein the flue gas enters from a first heat medium inlet of the heat taking heat exchanger and is discharged to the deduster from a first heat medium outlet on the heat taking heat exchanger; a first refrigerant outlet of the heat taking heat exchanger is communicated to a second heat medium inlet of the warming heat exchanger through a first heat medium pipeline, and a first refrigerant inlet of the heat taking heat exchanger is communicated with the second heat medium outlet of the warming heat exchanger through a first refrigerant medium pipeline; and the flue gas discharged by the condensation dust removal device enters a second refrigerant inlet of the warming heat exchanger through a pipeline and is discharged from a second refrigerant outlet of the warming heat exchanger.

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