CN201291118Y - Desulfurization dust collector for industrial furnace - Google Patents

Abstract

The utility model discloses a desulfurization and dust removal device for an industrial kiln. The device has a desulfurization and dust removal device. The desulfurization and dust removal device includes a shell, a contact cooling spray device fixed on the shell, a sewage pipe, a blocking cap and inlet pipe. The housing has a flue gas inlet, an annular bottom plate and an annular side plate. The contact cooling spray device is a tube-tube contact cooling spray device. The tube-tube contact cooling spray device has a tube tube and a tube plate. Each single tube of the tube tube passes through the corresponding tube hole on the tube plate, and Fixed on the tube plate, each single tube of the tube array is arranged parallel to each other and vertically, the upper and lower ends of the tube body of each single tube are open, and the upper end of the tube body is provided with a water inlet. The desulfurization and dust removal efficiency of the device of the utility model can reach more than 98%, and the equipment investment is small, the operating cost is low, and the energy consumption is low, so it is suitable for popularization and use in a large area.

Description

A desulfurization and dust removal device for industrial furnaces

technical field

The utility model belongs to atmospheric environment protection equipment, in particular to a desulfurization and dust removal device for industrial kilns.

Background technique

The combustion products of industrial furnaces have caused serious pollution to the atmosphere, affecting human survival and quality of life. For example, the sulfur in the fuel of industrial furnaces has formed acid rain in the atmosphere, resulting in reduced agricultural production. The harmful fine dust emitted by industrial furnaces has affected human beings. health and pollute the environment. Therefore, countries all over the world have stricter and stricter restrictions on the emission of various industrial furnaces, and have established emission standards for industrial furnaces and kilns.

The dust removal devices used in industrial furnaces are mainly divided into three categories, one is the dry dust removal device, which uses the gravity, inertial force, centrifugal force of the dust or the electrostatic attraction generated by the external electric field or the effect of the filter to remove the dust Capture to achieve the purpose of dust removal and purification of flue gas, but the device cannot remove harmful gases in the flue gas; the other type is a wet dust removal device, which uses water to move relative to the flue gas in the cupola, and the flue gas During the contact process between smoke and harmful gas molecules and water, the inertial collision, blocking effect, diffusion and dissolution, and the condensation of water molecules will make the smoke and dust in the smoke combine with each other and gradually form larger particles and be captured. At the same time, the harmful gas in the flue gas is dissolved into the water and captured. The dust removal effect of the above two types of devices is not good, the desulfurization efficiency is not high, especially the ability to remove micro particles is poor. There is also a dry and wet dust removal device, which combines dry dust removal and wet dust removal to improve dust removal efficiency, but this combination device has the problems of large equipment investment, high energy consumption, and high operating costs.

The cupola is a traditional equipment in foundry enterprises, which provides molten metal for pouring; its principle is to use the heat generated by coke combustion to melt the metal; due to the low maintenance and operation costs, and the process of chemical carbonization, so far, the cupola Still widely used. However, the flue gas discharged from the cupola contains a large amount of harmful particle dust and sulfur-containing oxide gas, which seriously affects the living environment of the additional residents of the foundry. For a long time, the desulfurization and dust removal of the cupola has been an important part of the environmental management of the foundry. As a key project, many enterprises have invested a lot of manpower and funds in the development of desulfurization and dust removal technology for cupolas.

At present, there are two types of desulfurization and dust removal devices for cupolas. One is the water curtain dust removal device. A water nozzle is installed above the cupola, and the high-pressure water is used to spray the water curtain horizontally, and the high-temperature furnace gas of the cupola passes through the water curtain. When the larger particles collide with the water curtain to absorb water and mix with water, they flow into the sewage tank with water, and part of the sulfur oxide in the furnace gas is absorbed by water and becomes sulfuric acid to be separated from the furnace gas; due to the small thickness of the water film, this type of The dust removal device can only remove large particles, and the micro particles and most of the sulfur oxide gases in the cupola flue gas are still discharged into the atmosphere. At the same time, the high-pressure water forming the water film requires large energy consumption and high operating costs.

Another type of dust removal device used is a combination device. The flue gas from the cupola is first introduced into the cyclone dust collector with a high-power induced draft fan, and the cooling effect and dust removal function of the cyclone dust collector are used to remove large particles in the flue gas and reduce Flue gas temperature; then the furnace gas is introduced into the bag filter to remove tiny particles in the flue gas, and then sprayed with water to absorb part of the sulfur dioxide and further dust removal. This type of dust removal device can remove harmful particles in the cupola flue gas and eliminate some harmful gases in the flue gas, but this type of dust collector has a large investment, high power consumption, and high operating costs.

As mentioned above, the current dedusting devices used for cupola furnaces or dedusting effects cannot meet the national emission standards, or the investment is large and the operating costs are high, and small and medium-sized foundries cannot afford the dedusting costs. At the same time, people's awareness of environmental protection is constantly improving, and the emission requirements for industrial kilns such as cupolas are getting higher and higher, and the country is formulating increasingly strict emission standards.

Utility model content

The purpose of this utility model is to provide a desulfurization and dust removal device for industrial kilns that not only has good dust removal effect and high desulfurization efficiency, but also has low energy consumption, low equipment investment and low operating cost in view of the shortcomings of the above-mentioned desulfurization and dust removal device.

The general technical idea of the utility model is: the common water is used as the cooling water to fully contact the hot gas generated from the industrial kiln from the top to the bottom to exchange energy and matter, and the purpose is to use less Cooling water can absorb more soot and sulfur dioxide. One is to change the distribution state of the cooling water by dispersing the cooling water as much as possible and increasing the flow distance, and control the flow direction, flow distance and flow speed of the hot gas, so that the gas-liquid two-phase can be fully contacted. In the cooling water, the soot and sulfur dioxide in the hot gas are directly adsorbed. The second is to exchange heat through multiple devices, and use phase change means to remove dust and desulfurize: first, use the characteristics of the high temperature of the hot gas that has just contacted with the cooling water to vaporize a part of the sprayed cooling water into water vapor , so that the hot gas becomes a mixed gas containing both smoke and water vapor; after the mixed gas is cooled by the subsequent device, the water vapor in it changes into small droplets, because the water vapor and the smoke and the water vapor before the phase change The sulfur dioxide gas is well mixed, so it can not only effectively absorb a part of sulfur dioxide in the phase change, but also efficiently absorb the tiny particles in the flue gas; as the small droplets continue to form, some of them continue to aggregate into larger particles. The droplets form a water flow and then merge with the cooling water to take away the contained sulfur dioxide and soot particles.

A technical solution for realizing the purpose of this utility model is: a desulfurization and dust removal device for industrial kilns, which has a desulfurization and dust collector. Cooling spray device, sewage pipe, blocking cap and water inlet pipe; the shell has a flue gas inlet, an annular bottom plate and an annular side plate, the flue gas inlet is located in the center of the annular bottom plate, the annular bottom plate and the annular side plate are airtightly connected, The upper end of the shell is open; the blocking cap is a structural part with a high inside and low outside on the upper surface; the contact cooling spray device and the blocking cap are both in the shell, and the blocking cap is located in the contact cooling The lower part of the spray device is located in the center of the shell; the space between the lower end of the contact cooling spray device, the blocking cap and the annular bottom plate of the shell is the spray area; there are 1 to 4 water inlet pipes, which are directed toward The contact cooling spray device provides water inlet components; there are 1 to 2 sewage pipes, and the sewage pipes are located outside the shell, and their inlets are located at the lowest part of the shell and communicate with the inner cavity of the shell.

The above-mentioned contact cooling spray device is a tube-tube contact cooling spray device. The tube-tube contact cooling spray device has tube tubes and 1 to 2 tube plates; each single tube of the tube tubes passes through the tube plate correspondingly The tube holes are fixed on the tube plate, and the tube plate is fixed on the annular side plate of the shell; each single tube of the tube array is arranged parallel to each other and vertically, and the upper and lower ends of each single tube are open. The upper end of the pipe body is located above the tube sheet, and the upper end of the pipe body is provided with a water inlet, and the water inlet has a water inlet; the wall of these pipe bodies above the pipe section below the tube sheet is provided with a gas-liquid balance Mouth; the blocking cap is in the shape of a conical shell with the apex at the top.

The above-mentioned contact cooling spray device has two tube plates, which are divided into an upper tube plate and a lower tube plate located below the upper tube plate; the water inlet pipe is divided into 1 upper water inlet pipe and 1 to 3 lower water inlet pipes; the upper water inlet pipe One part is inside the shell, and the rest is outside the shell. The part of the upper water inlet pipe inside the shell is located above the upper tube plate, and its water outlet is located above the central part of the upper tube plate; the lower water inlet pipe is outside the shell, and its The water outlet is arranged on the shell and communicates with the inner cavity of the shell. The water outlet is located between the upper tube plate and the lower tube plate; the water inlet part set on the upper end of each single tube of the tube array It is located above the upper tube plate; the gas balance port of each single tube of the tube array is located on the pipe section below the lower tube plate; the tube body of each single tube of the tube array is sealed and fixedly connected with the upper tube plate, and the upper tube plate and the shell The inner wall of the annular side plate is sealed and fixedly connected; the tube body of each single tube of the tube array is welded and fixed on the lower tube plate, and there is a gap between each single tube and the part of the hole wall of the corresponding tube hole of the lower tube plate; The lower tube plate is welded and fixed on the annular side plate of the shell.

The above-mentioned desulfurization and dust collector also includes an exhaust fan, which is located in the casing and at the upper opening of the casing.

Another technical solution to achieve the purpose of this utility model is: a desulfurization and dust removal device for industrial kilns, which has a desulfurization and dust collector. device, contact cooling spray device and blocking cap; the upper end of the shell is open; the shell has a smoke inlet, an annular bottom plate and an annular side plate, the smoke inlet is located in the center of the annular bottom plate, and the annular bottom plate and the annular side plate are airtightly connected together and located under the annular side plate; the annular bottom plate is inclined in a way that the inside is high and the outside is low, and there is a water outlet at the lowest point on the annular bottom plate, which is airtightly connected with the water inlet of the sewage pipe; the blocking cap is towards The lower surface is a conical structural member; the water flow distributor, the contact cooling spray device and the blocking cap are arranged in the shell in order from top to bottom; the water outlet of the water inlet pipe is airtightly connected with the water inlet of the water flow distributor The water flow distributor includes a water collection tank and 6 to 12 water outlet pipes with water inlets arranged on the upper part of the water collection box; the water outlets of each water outlet pipe face the contact cooling spray device. The space surrounded by the lower end of the contact cooling spray device, the upper surface of the blocking cap, the upper surface of the annular bottom plate of the casing and the inner surface of the annular side plate of the casing is a spray area.

The above-mentioned contact cooling spray device is a tube-column contact-type cooling spray device. The tube-column contact cooling spray device has tube tubes and two tube sheets; the two tube sheets are divided into an upper tube sheet and a The lower tube plate of the tube array; each single tube of the tube array is arranged parallel to each other and vertically, the upper and lower ends of the tube body of each single tube are open, and each single tube of the tube array passes through the corresponding tube hole on the upper tube plate and the lower tube Corresponding tube holes on the plate, the upper end of the tube body of each single tube is located above the upper tube plate, and the lower end of the tube body of each single tube is located below the lower tube plate; The body is sealed and fixedly connected with the upper tube plate, and the upper tube plate is sealed and fixedly connected with the inner wall of the annular side plate of the shell; the tube body of each single tube of the tube array is also welded and fixed with the lower tube plate, and each single tube There is a gap between part of the hole wall of the corresponding tube hole of the lower tube plate; the lower tube plate is welded and fixed on the annular side plate of the shell; the water outlet pipe of the water flow distributor is located at the edge of the upper tube plate and is located The upper outlet pipe above the upper tube sheet, and the lower outlet pipe including a water outlet located between the upper tube sheet and the lower tube sheet.

The above-mentioned desulfurization and dust collector also includes 6 to 20 swirl flow guide plates arranged in the spray area and above the blocking cap; each swirl flow guide plate has the same shape and is a quadrilateral plate with a horizontal upper edge. , the inner and outer edges form an included angle of 90° with the upper edge, and the length of the outer edge is greater than the length of the inner edge, so that the lower edge is inclined with a high inside and a low outside, and the inclination angle γ is 20-35°; each rotation The plate body of the flow guide plate is welded and fixed on the annular side plate of the shell by its outer edge, and the height position is the same; The diameter direction of each swirl guide plate is at an angle of 5 to 15°, and the outer edges of each swirl flow guide plate are set at an angle of 20 to 40° with the vertical direction, so that the inner edges of each swirl flow guide plate are at different heights The upper body is arranged around a corresponding imaginary circle, and the diameter of the imaginary circle ranges from 20% to 30% of the diameter of the housing.

The above-mentioned desulfurization dust collector also includes a flake mesh atomization device; the flake mesh atomization device is arranged in the spray area and is located between the contact cooling spray device and the swirling flow guide plate; the flake mesh atomization device includes a mesh The bottom plate and each atomizing cylinder are vertically parallel and tightly arranged on the mesh bottom plate; each atomizing cylinder is formed by winding a diamond-shaped steel mesh plate into a cylindrical shape.

The above-mentioned blocking cap is a blocking cap with a water flow rotating part on the upper surface; the blocking cap includes a cap body and a water flow rotating part; the water flow rotating part includes a truncated conical shell and 6 to 12 strips welded and fixed on the lower surface of the truncated conical shell The shape of the strip-shaped connecting plate is involute. The strip-shaped connecting plates of the water flow rotating part are symmetrically arranged on the frustum-shaped shell, and the water-flow rotating parts are welded and fixed on the lower end surface of each connecting plate. on the upper surface of the cap. The distance s between the lower edge of the frustum-shaped shell and the cap body is 5%-10% of the diameter of the cap body.

The above-mentioned desulfurization and dust collector also includes an exhaust fan, which is located in the casing and at the upper opening of the casing.

The positive effect of the utility model is:

(1) The contact type spray cooling device of the present utility model adds cooling water from its upper part during use, while spraying cooling water flows out from its lower part, and these spraying cooling water enters the space below when it falls, and the smoke After the gas enters the space, it first contacts with the spray cooling water to remove part of the sulfur dioxide and remove part of the smoke. At the same time, part of the cooling water is vaporized into water vapor, and the water vapor is mixed with the flue gas to form a mixed gas, and then the mixed gas enters the contact The spray cooling device contacts with the cooling water in the contact spray cooling device to remove part of the sulfur dioxide and part of the smoke in the mixed gas, and at the same time, the water vapor in the mixed gas is cooled and turns into water. During the phase change process of water vapor, it also absorbs a part of sulfur dioxide and takes away the dust with smaller particles, so that the device of the present invention can not only perform desulfurization and dust removal in two stages, so that the flue gas and cooling water The contact time is longer, and the desulfurization and dust removal are carried out in the contact spray cooling device through direct contact and phase change, so that the dust removal efficiency is higher. If the added cooling water is alkaline water with a pH value of 8-12, the efficiency of removing sulfur dioxide can reach more than 98%, or even very close to 100%.

(2) On the one hand, the utility model can be directly connected to the furnace body or flue of industrial furnaces such as cupolas. For furnace bodies or flues of different structures and shapes, it is generally necessary to make a corresponding cylindrical connector. The connecting piece installs the device of the utility model on the furnace body or the flue of the relevant industrial kiln, so the desulfurization and dust removal device of the utility model has a wider application range.

(3) The structure of the utility model is simple. Compared with the combined dust removal device, it does not need high-power air induction equipment. Compared with the combined dust removal device, the investment can be saved by more than 60%, and the energy consumption is lower, and the operation cost is also lower, so it is suitable for popularization and use in a large area. In addition, the utility model can also be added to the existing dust removal device to improve the effect of dust removal and desulfurization.

(4) The blocking cap of the present utility model has two functions in use, one is to block the rising smoke and make it enter the spray area in the inner cavity of the casing from the passage between the blocking cap and the casing, and the other is It is possible to block the cooling water falling from above, not only prevent the cooling water from falling into the furnace body or the flue, but also make the cooling water flow down the upper surface of the blocking cap and fall to the annular bottom plate of the shell. In the process of the cooling water falling to the annular bottom plate, the first mutual contact with the flue gas is carried out. When the barrier cap of the present invention is an inverted conical shell, the cooling water falling to the barrier cap can also form a circular water curtain when it falls to the annular bottom plate. When the upper surface of the cap body of the blocking cap is equipped with a water flow rotating part, the water flow falling from above can continue to fall from the cap body along the involute-shaped connecting plate, which not only prolongs the distance that the water flow flows on the blocking cap, but also The water flow is divided evenly. The lower edge of the frustum-shaped shell exceeds the cap body, so that the blocking cap can form two layers of water curtains inside and outside on the one hand, and on the other hand, a part of the smoke passing through the inner water curtain can pass through the cap body, the frustum-shaped shell and the connecting plate. Pass through the interlayer formed between them and enter the spray area in the inner cavity of the housing. When the flue gas passes through the interlayer, it can also exchange energy and substances with the reverse cooling water, so that the flue gas becomes a mixed gas containing water vapor. Make the cooling water absorb part of the soot and sulfur dioxide.

(5) There are two ways of water intake to the desulfurization dust remover of the present utility model. One is to directly use the water inlet pipe to introduce the cooling water into the contact cooling spray device; when the contact cooling spray device is a tube contact cooling spray device with two upper and lower The water pipes and 1 to 3 lower water inlet pipes send cooling water to the upper tube plate and between the upper tube plate and the lower tube plate respectively.

Another way of water intake is in the form of a water flow distributor. First, the cooling water is introduced into the water collection tank of the water flow distributor through a water inlet pipe, and then the cooling water is introduced into the contact cooling spray device through the water outlet pipe. The latter method can make the cooling water entering the desulfurization and dust collector have a buffer place, and then the water collection tank guides the cooling water to the upper tube plate through multiple outlet pipes, and 1 to 2 outlet pipes can also be set A special outlet pipe is installed, and its outlet is set between the upper tube plate and the lower tube plate.

In these two water inlet methods, after the cooling water on the upper tube plate overflows the upper end of the single tube of the tube array, it can enter the single tube of the tube array, and then flow down in the shape of a water film along the inner wall of the single tube; while flowing into the upper tube The cooling water between the plate and the lower tube sheet flows down as a water film along the outer wall of the single tube from the gap between each single tube of the tube array and the lower tube sheet; while the mixed gas flows through the tube body from bottom to top. The cooling water on the outer wall is in contact with each other, which not only keeps the mixed gas flowing upwards smoothly, but also has a larger contact area between the gas and water. In addition, the space area between the upper tube plate and the lower tube plate and between the single tubes of the tube array is a conduction cooling zone, that is to say, the cooling water added from the lower water inlet pipe also mixes the cooling water in the tubes flowing through the tube array. The air provides further cooling.

(6) When the desulfurization and dust collector of the present invention is equipped with a swirl guide plate, if the flue gas passes through the water curtain formed by the blocking cap and enters the spray area at a certain flow rate, under the guidance of the swirl guide plate, the smoke The gas rotates upward along the guide plate while mixing with the water flow and water mist in reverse to form a mixed cyclone flow containing smoke and water vapor. It not only prolongs the mixing time of flue gas, water flow and water mist, but also the mixed gas will be cooled by the cooling water and condense into small droplets with a part of the soot as the core. take away.

(7) When the desulfurization dust remover of the present utility model is equipped with a scale net atomization device, when the flue gas passes through the scale net atomization device, the spray-like cooling water flows out from the contact spray cooling device. It falls on each atomizing tube of the scale net atomizing device, and the mixture of flue gas and water mist is not only cooled by contacting the atomizing tube in the upward process, but also directly contacted by cooling water. , and also atomize part of the cooling water, which is beneficial to dust removal and desulfurization.

(8) When the utility model is equipped with an exhaust fan, the internal resistance can be reduced when needed, so that the flue gas can flow smoothly without being blocked.

Description of drawings

Fig. 1 is a kind of structural representation of desulfurization and dedusting device of the present utility model;

Fig. 2 is the structural representation of the tube sheet in Fig. 1;

Fig. 3 is a structural schematic diagram of the blocking cap in Fig. 1 being fixed on the housing through a support rod;

Fig. 4 is a structural schematic diagram of the interconnection of the tube array and the tube sheet in Fig. 1;

Fig. 5 is another structural representation of the desulfurization and dust removal device of the present invention;

Fig. 6 is a third structural schematic diagram of the desulfurization and dust removal device of the present invention;

Fig. 7 is the fourth structural schematic diagram of the desulfurization and dust removal device of the present invention;

Fig. 8 is a schematic structural view of the tube sheet in Fig. 7;

Fig. 9 is a schematic structural view of the scale net atomization device in Fig. 7;

Fig. 10 is a schematic structural view of the swirl guide plate in Fig. 7;

Fig. 11 is a schematic structural view of the water flow rotating part of the blocking cap in Fig. 7;

Fig. 12 is a schematic structural view of the water flow distributor in Fig. 7 .

Tag table

Desulfurization dust collector 1,

Shell 1-1, flue gas inlet 1-1-1, annular bottom plate 1-1-2, annular side plate 1-1-3, spray area 1-1-4,

Water inlet pipe 1-2, upper water inlet pipe 1-2-1, lower water inlet pipe 1-2-2,

Contact cooling spray device 1-3, liquid level balance pipe 1-3-1,

Tube sheet 1-4, upper tube sheet 1-4-1, lower tube sheet 1-4-2, tube hole 1-4-3,

Tube 1-5, gas balance port 1-5-1, main body 1-5-2,

Water inlet 1-6, water inlet 1-6-1, short connection pipe 1-6-3,

Block cap 1-7, support rod 1-7-1,

Exhaust fan 1-8,

Sewage pipe 1-9,

Lower connector 1-10, flange 1-10-1,

Cupola furnace body 3, feed port 3-1, flange plate 3-2,

Shell 11, flue gas inlet 11-1, annular bottom plate 11-2, annular side plate 11-3, spray area 11-4,

Water inlet pipe 12, exhaust fan 18, sewage pipe 19,

Water flow distributor 2, water collection tank 21, water outlet pipe 22, upper water outlet pipe 22-1, lower water outlet pipe 22-2,

Contact cooling spray device 4, tube array 41, upper tube plate 42, tube hole 42-1, lower tube plate 43, tube hole 43-1,

Scale mesh atomization device 5, mesh bottom plate 51, atomization tube 52,

swirl guide plate 6,

Blocking cap 7, cap body 71, water flow rotating part 72, conical shell 72-1, strip connecting plate 72-2,

Detailed ways

(Example 1)

Referring to Fig. 1, the desulfurization and dust removal device for industrial kilns in this embodiment is a single-stage desulfurization and dust removal device. The desulfurization dust collector 1 includes a housing 1-1, and also includes a contact cooling spray device 1-3, a sewage pipe 1-9, a blocking cap 1-7 and a water inlet pipe 1-3 fixed on the housing 1-1. 2. The water inlet pipe 1-2 is a component that supplies water to the contact cooling spray device 1-3 during use. There is one sewage pipe 1-9, and the sewage pipe 1-9 is located outside the housing 1-1, and its inlet is located at the lowest part of the housing 1-1 and communicates with the inner cavity of the housing 1-1.

Still referring to Fig. 1, the housing 1-1 has a flue gas inlet 1-1-1, an annular bottom plate 1-1-2 and an annular side plate 1-1-3, and the flue gas inlet 1-1-1 is located on the annular bottom plate 1-1-1. In the center of 1-2, the annular bottom plate 1-1-2 is airtightly connected with the annular side plate 1-1-3, and the annular bottom plate 1-1-2 is inclined to be set in a way that the inside is high and the outside is low, and the shell 1-1 The upper end is open.

The blocking cap 1-7 is a structural member whose upper surface is higher on the inside and lower on the outside. In this embodiment, a conical shell is preferred. The contact cooling spray device 1-3 and the blocking cap 1-7 are both in the housing 1-1; the cone top of the blocking cap 1-7 is located above, and the contact cooling spray device 1-3 is located in the blocking cap 1- 7 above. Four supporting rods 1-7-1 are welded and fixed to the lower edge of the blocking cap 1-7, and the other ends of the four supporting rods 1-7-1 are welded and fixed to the annular side plate of the housing 1-1 1-1-3 (see Figure 3), so that the blocking cap 1-7 is located in the center of the housing 1-1. The space between the lower end of the contact cooling spray device 1-3 and the blocking cap 1-7, and the lower end of the contact cooling spray device 1-3 and the annular bottom plate 1-1-2 of the housing 1-1 For the spray area 1-1-4.

Still referring to FIG. 1 , the contact cooling spray device 1-3 is a tube-tube contact cooling spray device, and the tube-tube contact cooling spray device 1-3 has a tube tube 1-5 and a tube sheet 1-4. A set of tube holes 1-4-3 is provided on the tube sheet 1-4 (see FIG. 2 ). Each single tube of the tube array 1-5 passes through the corresponding tube hole 1-4-3 on the tube plate 1-4 and is fixed on the tube plate 1-4, and the tube plate 1-4 is fixed on the shell 1-1 On the annular side plate 1-1-3. Each single tube of the tube array 1-5 is arranged parallel to each other and vertically. The upper and lower ends of each single tube are open. The upper ends of these tubes are located above the tube sheets 1-4. A water inlet 1-6 is provided, and the water inlet 1-6 has a water inlet 1-6-1; these pipe bodies are provided with a gas-liquid balance port on the wall above the pipe section below the tube plate 1-4 Through holes 1-5-1.

Still referring to Fig. 1, in this embodiment, the above-mentioned tube plate 1-4 of the contact cooling spray device 1-3 is divided into two pieces, which are divided into the upper tube plate 1-4-1 and the upper tube plate 1-4-1. The lower tube plate 1-4-2 at the bottom; the water inlet pipe 1-2 is divided into an upper water inlet pipe 1-2-1 and a lower water inlet pipe 1-2-2; a part of the upper water inlet pipe 1-2-1 is in the shell The body 1-1 is inside and the rest is outside the casing 1-1. The part of the upper water inlet pipe 1-2-1 inside the casing 1-1 is located above the upper tube plate 1-4-1, and its water outlet is located at Above the central part of the upper tube plate 1-4-1; the lower water inlet pipe 1-2-2 is outside the shell 1-1, and its water outlet is set on the shell 1-1 and connected to the inner cavity of the shell 1-1 In communication, the water outlet is located between the upper tube plate 1-4-1 and the lower tube plate 1-4-2. The water inlet 1-6 provided on the upper end of each single tube body of the tube array 1-5 is located above the upper tube plate 1-4-1. The design of the water inlet 1-6 of this embodiment is to set 5 to 10 water inlets at the same height on the wall of the pipe section above the upper tube plate 1-4-1 of each single pipe of the tube array 1-5. Water enters the through hole 1-6-1 as the water inlet in the pipe, and the top heights of all single pipes are consistent.

Still referring to Fig. 1, the tube hole 1-4-3 on the lower tube plate 1-4-2 is slightly larger than the tube hole 1-4-3 on the upper tube plate 1-4-1, and each of the tubes 1-5 The tube body of the single tube is sealed and welded and fixedly connected with the upper tube plate 1-4-1, and the upper tube plate 1-4-1 is sealed and welded and fixedly connected with the inner wall of the annular side plate 1-1-3 of the shell 1-1; The tube body of each single tube of the tube 1-5 is fixed on the lower tube plate 1-4-2 by welding at three places, so that each single tube and the corresponding tube hole 1-4-2 of the lower tube plate 1-4-2 A gap is formed between the hole walls of 4-3 (see Figure 4). This structure makes the space between the upper tube plate 1-4-1 and the lower tube plate 1-4-2 and between the single tubes of the tube array 1-5 become the conduction of the contact cooling spray device 1-3. type cooling zone.

See Figures 1 and 3, the blocking cap 1-7 is fixedly supported in the housing 1-1 by the support rod 1-7-1 and is located below the contact cooling spray device 1-3; the shape of the blocking cap 1-7 It is a conical shell, and is located at the center of the shell 1 according to the top of the cone.

Still referring to Fig. 1, the desulfurization and dust removal device of the present embodiment can be used on the cupola 4. Before use, a flange plate 4- 2. Then the lower connector 5 with the flange 5-1 manufactured in advance is airtightly fixed on the flange 4-2. For the desulfurization and dust removal device of this embodiment, it is fixed by a special bracket, and the upper port of the shell 1-1 of the first-stage desulfurization and dust collector 1 that forms the flue gas inlet 1-1-1 and the upper port of the lower connector 5 The airtight and fixed connection makes the flue gas inlet 1-1-1 of the casing 1-1 communicate with the flue gas outlet of the cupola.

When the desulfurization and dust removal device of this embodiment is used, the cooling water is pumped into the upper water inlet pipe 1-2-1 and the lower water inlet pipe 1-2-2 through the water pump, and after the cooling water flows out of the water inlet pipe 1-2, it enters the contact cooling spray device In 1-3, the cooling water passes through the contact cooling spray device 1-3 from top to bottom under the action of gravity, wherein the cooling water entering the contact cooling spray device 1-3 from the upper water inlet pipe 1-2-1 is passed by the column The water inlet 1-6-1 of the water inlet part 1-6 of each single pipe of the pipe 1-5 enters each single pipe and flows down the inner wall of each single pipe, and enters the contact cooling through the second water inlet pipe 1-2-2 The cooling water of the spray device 1-3 enters the cavity of the shell 1-1 between the upper tube plate 1-4-1 and the second upper tube plate 1-4-2, and then flows through the lower tube plate 1 - The gap between the hole wall of the tube hole 1-4-3 of 4-2 and the outer wall of the corresponding single tube flows down along the outer wall of each single tube, and the cooling water flowing down the inner and outer walls of the single tube gathers at the lower end of the single tube Finally, it falls in a spray shape and leaves the contact cooling spray device 1-3, a part of the cooling water falls to the upper surface of the blocking cap 1-7, and then forms a water curtain along the upper surface of the blocking cap 1-7 from its edge Falling onto the annular bottom plate 1-1-2 of the housing 1-1, another part of the cooling water falls from the channel formed between the blocking cap 1-7 and the annular side plate of the housing 1-1 to directly reach the housing 1 The cooling water that falls on the annular bottom plate 1-1-2 of the shell 1-1 flows into the sewage pipe 1-9 along the annular bottom plate 1-1-2, and is discharged along the sewage pipe 1-9 for desulfurization and dust removal outside the device.

The flue gas produced by the cupola enters the desulfurization and dust removal device from the flue gas inlet 1-1-1 of the shell 1-1 from bottom to top, and first passes through the surrounding blocking caps due to the blocking of the upper blocking cap 1-7 1-7 and the water curtain between the annular bottom plate 1-1-2 of the housing 1-1 contact with the cooling water, and then contact with the spray cooling water falling from the contact cooling spray device. During this process, heat exchange occurs between the flue gas and the cooling water in contact with it, and a part of the soot particles and a part of sulfur dioxide are taken away by a part of the cooling water, and this part of the cooling water falls to the annular bottom plate 1-1- of the shell 1-1 2 and then flow into the sewage pipe 1-9, and discharge out of the desulfurization and dust removal device along the sewage pipe 1-9; the other part of the cooling water that is in contact with the flue gas absorbs heat due to heat exchange to produce phase change and becomes water vapor. Driven by the water vapor to mix with the flue gas in the flow to form a mixed gas.

When the mixture of flue gas and water vapor enters the contact cooling spray device 1-3 upwards, a part of the mixture directly enters the inner cavity of each single tube of the row tubes 1-5, and enters the contact cooling spray device 1 The cooling water in the inner cavity of each single tube of -3 is in contact with each other, and another part of the mixed gas enters the space between the single tubes of row tubes 1-5 and contacts with the cooling water flowing down the outer wall of each single tube, the mixed gas During the contact process with the cooling water, part of the sulfur dioxide and part of the soot particles are absorbed by the cooling water.

At the same time, the water vapor in the mixed gas entering the contact cooling spray device 1-3 is cooled under the cooling effect of the cooling water and undergoes a phase change into liquid water. During the generation of liquid water, the mixed Part of the sulfur dioxide in the gas is absorbed by these newly formed liquid water droplets, while the smaller smoke particles are absorbed by these newly formed liquid water droplets. Because the water vapor is mixed with the soot and sulfur dioxide gas in the flue gas, when the water vapor phase turns into liquid water droplets, it can easily absorb the adjacent sulfur dioxide and adsorb the adjacent tiny particles, so the efficiency is higher . In the contact cooling spray device 1-3, there are two ways for the cooling water to cool the mixed gas. The first method is direct contact cooling, whether it is the mixed gas that directly enters the inner cavity of the single tube of the tubes 1-5, or the mixed gas that enters the single tubes of the tubes 1-5, and flows through the contact cooling spray The cooling water of the device 1-3 is directly contacted and cooled; the second cooling method is that for the mixed gas directly entering the inner cavity of each single tube of the row tubes 1-5, these mixed gases are located on the outer wall of each single tube after passing through each single tube. When cooling the pipe section of the water supply area, if the cooling water in the cooling water supply area of the outer wall has a certain height, the mixed gas can be further cooled by heat conduction; , these mixed gases enter the inner cavity of the single tube after passing through the through hole 1-5-1 as the gas-liquid balance port under the lower tube plate 1-4-2 of each single tube, and then pass through the outer wall of the single tube The pipe section in the cooling water supply area is also cooled by heat conduction at this time; the two cooling methods make the water vapor in the mixed gas phase change into liquid water droplets relatively easily. These water droplets, which have absorbed sulfur dioxide and adsorbed fine particles of soot, are continuously aggregated with each other and mixed with the above-mentioned cooling water that has absorbed part of sulfur dioxide and adsorbed part of soot particles in direct contact with the mixed gas. Together, it leaves the contact cooling spray device 1-3 in the form of spraying and falls into the spraying area. After the cooling water in the spraying area absorbs a part of sulfur dioxide and absorbs a part of soot particles, it is finally discharged along the sewage pipe 1-9 for desulfurization. Outside the dust removal device.

The method of this embodiment has a good dust removal effect, and the desulfurization efficiency can reach more than 85%.

(Example 2)

See Fig. 1, the rest is basically the same as Embodiment 1, the difference is: in order to make the flue gas in the housing 1-1 flow smoothly and not be blocked, the upper end of the housing 1-1 also passes through the bracket (not shown in the figure). Out) to connect an exhaust fan 1-8.

(Example 3)

See Fig. 5, this embodiment is basically the same as Embodiment 2, the difference is that: the contact cooling spray device 1-3 is also provided with a liquid level balance pipe 1-3-1, a liquid level balance pipe 1-3-1 There are 6 tubes, the liquid level balance tube 1-3-1 passes through the corresponding tube hole 1-4-3 of the upper tube plate 1-4-1 of the tube plate 1-4, and also passes through the lower tube plate 1-4-2 The corresponding tube holes 1-4-3. Its fixing method is the same as that of the tube array 1-5 being fixed on the tube sheet 1-4. The upper port of the liquid level balance pipe 1-3-1 is located at the upper port of each single pipe of the array pipe 1-5 from the height and the water inlet 1-6 of the water inlet part 1-6 on each single pipe of the array pipe 1-5 Between -1. After setting the liquid level balance pipe 1-3-1, when the liquid level of the cooling water is higher than the water inlet part 1-6, it can flow into the pipe from the upper port of the liquid level balance pipe 1-3-1, so as to balance the liquid The role of the position prevents the dust removal effect from overflowing over the upper port of the single tube of the tubes 1-5 when the cooling water is added too fast.

The liquid level balance pipe 1-3-1 of the present embodiment is also provided with a water inlet 1-6 structurally, and the water inlet 1-6-1 of the water inlet 1-6 is connected with the single pipe 1-5. The height of the water inlet 1-6-1 of the water inlet part 1-6 of the pipe is consistent, so that the liquid level balance pipe 1-3-1 can also set up the single pipe 1-5 when the cooling water is at a normal height. The role of the tube.

(Example 4)

See Fig. 6, this embodiment is basically the same as Embodiment 2, the difference is that in this embodiment, each single tube of the column tubes 1-5 of the contact cooling spray device 1-3 is formed by the main body 1-5-2 It is composed of a short connection pipe 1-6-3 welded on the upper end face of the main body 1-5-2. There are 3 solder joints in this solder joint. Between each solder joint, a horizontal gap with a height of 10mm is formed between the lower end surface of the short connection pipe 1-6-3 and the upper end surface of the main body 1-5-2, and these horizontal gaps are the water inlet part 1-6. Water inlet 1-6-1. The heights of the upper ports of the main pipe bodies 1-5-2 of all the single pipes are the same, and the heights of the upper ports of all the short connection pipes 1-6-3 are also the same. This scheme can make the cooling water enter each single tube of the row tubes 1-5 through these gaps 1-6-1.

(Example 5)

Referring to Fig. 7, the desulphurization and dust removal device for industrial kilns in this embodiment has a desulfurization and dust removal device 1, which includes a housing 11, a water inlet pipe 12, a sewage pipe 19, a water flow distributor 2, a contact cooling spray Device 4 and blocking cap 7. The housing 11 has a diameter of 2.6 m.

The upper end of the housing 11 is open, the housing 11 has a smoke inlet 11-1, an annular bottom plate 11-2 and an annular side plate 11-3, the smoke inlet 11-1 is located in the center of the annular bottom plate 11-2, and the annular bottom plate 11- 2 is airtightly connected with the annular side plate 11-3 and is located below the annular side plate 11-3. The annular bottom plate 11 - 2 is arranged obliquely according to the mode of high inside and low outside, and the water outlet located at the lowest position is arranged on the annular bottom plate 11 - 2 , and the water outlet is airtightly connected with the water inlet of the sewage pipe 19 .

The blocking cap 7 is a conical structure with a downward facing surface. The upper surface of the blocking cap 7 is provided with a water flow rotating part 72. The blocking cap 7 includes a cap body 71 and a water flow rotating part 72 (see FIG. 11 ). The water flow rotating part 72 includes a truncated conical housing 72-1 and 6 strip connecting plates 72-2 welded and fixed on the lower surface of the truncated conical housing 72-1. The shape of the strip connecting plates 72-2 is involute Each strip-shaped connecting plate 72-2 of the water flow rotating part 72 is centrally symmetrically arranged on the conical shell 72-1, and the water flow rotating part 72 is welded and fixed on the cap body 71 by the lower end surface of each connecting plate 72-2 on the upper surface; the lower edge of the frustum-shaped housing 72-1 beyond the distance s of the cap body 71 is 10% of the diameter of the cap body 71.

The contact cooling spray device 4 is a tube-column contact-type cooling spray device. The tube-column contact-type cooling spray device has a tube tube 41 and two tube plates, and the two tube plates are divided into an upper tube plate 42 and a In the lower tube plate 43 below the plate 42, the single tubes of the tube array 41 are arranged parallel to each other and vertically. The corresponding tube hole 42-1 and the corresponding tube hole 43-1 (see Figure 8) on the lower tube plate 43, the upper end of the tube body of each single tube is located above the upper tube plate 42, and the tube of each single tube The lower end of the body is located below the lower tube plate 43, and the tube body of each single tube of the tube array 41 is sealed and fixedly connected with the upper tube plate 42, and the upper tube plate 42 is sealed with the inner wall of the annular side plate 11-3 of the shell 11. Fixedly connected, the tube body of each single tube of the tube array 41 is also welded and fixed together with the lower tube plate 43, and there is a gap between each single tube and the part of the hole wall of the corresponding tube hole 43-1 of the lower tube plate 43 gap, the lower tube plate 43 is welded and fixed on the annular side plate 11-3 of the shell 11.

The water flow distributor 2 includes a water collection tank 21 and eight water outlet pipes 22 whose water inlets are arranged on the top of the water collection box 21, and the water outlets of each water outlet pipe 22 face the contact cooling spray device 4 (see FIG. 12 ). The outlet pipe 22 of the water flow distributor 2 includes an upper outlet pipe 22-1 whose water outlet is located at the edge of the upper tube sheet 42 and above the upper tube sheet 42, and includes a water outlet located between the upper tube sheet 42 and the lower tube sheet 43. The lower outlet pipe 22-2.

The water flow distributor 2 , the contact cooling spray device 4 and the blocking cap 7 are arranged in the housing 11 in order from top to bottom. The water outlet of the water inlet pipe 12 is airtightly connected with the water inlet of the water flow distributor 2 . The space surrounded between the lower end of the contact cooling spray device 4, the upper surface of the blocking cap 7, the upper surface of the annular bottom plate 11-2 of the housing 11 and the inner surface of the annular side plate 11-3 of the housing 11 is Spray zone 11-4.

(Example 6)

Still referring to Fig. 7, the rest is basically the same as that of Embodiment 5, the difference is that in order to make the flue gas in the housing 11 flow smoothly and not be blocked, the upper end of the housing 11 is also connected by a bracket (not shown in the figure) 1 exhaust fan 18.

(Example 7)

Still referring to FIG. 7 , the rest is basically the same as in Embodiment 6, except that the desulfurization and dust collector 1 also includes a scale mesh atomization device 5 (see FIG. 9 ). The scale mesh atomization device 5 is arranged in the space as the spray area 11 - 4 and is located between the contact cooling spray device 4 and the swirl guide plate 6 . The scale-mesh atomization device 5 includes a mesh bottom plate 51 and each atomizing cylinder 52 is vertically parallel and closely arranged on the mesh bottom plate 51 . Each atomizing tube is made of steel rhombus perforated plate wound into a cylindrical shape.

(Embodiment 8)

Still referring to Fig. 7, the rest are basically the same as Embodiment 6, except that the desulfurization dust remover 1 also includes 18 swirl guide plates 6 ( See Figure 10). The shape of each swirl deflector plate 6 is the same, being a quadrangular plate, its upper edge is horizontal, its inner edge and outer edge all form a 90° angle with the upper edge, and the length of the outer edge is greater than the length of the inner edge , so that the lower edge is inclined with a high inside and a low outside, and the inclination angle γ is 25°. The plate body of each swirl flow guide plate 6 is welded and fixed on the annular side plate 11-3 of the housing 11 by its outer edge, and they are located at the same height position. On the same height, the plate body of each swirl guide plate 6 is at an angle of 10° to the diameter direction of the housing 11 passing through its outer edge, and the outer edge of each swirl guide plate 6 is 30° to the vertical direction. °, so that the inner edge of each swirl guide plate 6 is set around a corresponding imaginary circle at different heights, and the diameter of this imaginary circle is 7m.

Claims (10)

1, a kind of desulfurization dust collector for industrial furnace, has desulfurizing dust-collector (1), this desulfurizing dust-collector (1) comprises housing (1-1), it is characterized in that: also comprise the contact cooling sprayer (1-3), the blow-off pipe (1-9) that all are fixed on the housing (1-1), stop cap (1-7) and water inlet pipe (1-2); Housing (1-1) has gas approach (1-1-1), annular bottom plate (1-1-2) and annular side plate (1-1-3), gas approach (1-1-1) is positioned at the central authorities of annular bottom plate (1-1-2), annular bottom plate (1-1-2) and airtight the linking together of annular side plate (1-1-3), annular bottom plate (1-1-2) is obliquely installed by low inside and high outside mode, and housing (1-1) upper end open; Stop that cap (1-7) is the low inside and high outside structural member of upper surface; Contact cooling sprayer (1-3) and stop that cap (1-7) all is in the housing (1-1) stops that cap (1-7) is positioned at the below of contact cooling sprayer (1-3) and is positioned at the central authorities of housing (1-1); The lower end of contact cooling sprayer (1-3) and stop cap (1-7) and the annular bottom plate (1-1-2) of housing (1-1) between the space be spray district (1-1-4); Water inlet pipe (1-2) has 1～4, provides the into parts of water to contact cooling sprayer (1-3) when being to use; Blow-off pipe (1-9) has 1～2, and blow-off pipe (1-9) is in outside the housing (1-1), and its import is positioned at the minimum position of housing (1-1) and communicates with the inner chamber of housing (1-1).

2, a kind of desulfurization dust collector for industrial furnace according to claim 1, it is characterized in that: contact cooling sprayer (1-3) is a tubulation contact cooling sprayer, and this tubulation contact cooling sprayer has tubulation (1-5) and 1～2 tube sheet (1-4); Every single tube of tubulation (1-5) passes tube sheet (1-4) and goes up corresponding pore (1-4-3), and is fixed on the tube sheet (1-4), and tube sheet (1-4) is fixed on the annular side plate (1-1-3) of housing (1-1); Every single tube of tubulation (1-5) is parallel to each other and vertically is provided with, the equal opening of body upper and lower side of every single tube, the upper end of these bodys is positioned at the top of tube sheet (1-4), and the upper end of body is provided with water entering section (1-6), and water entering section (1-6) has water inlet (1-6-1); The wall of the top of the pipeline section that is positioned at tube sheet (1-4) below of these bodys is provided with vapor liquid equilibrium mouth (1-5-1); The conical shell that is shaped as that stops cap (1-7), its vertex of a cone are positioned at the top.

3, a kind of desulfurization dust collector for industrial furnace according to claim 2, it is characterized in that: the tube sheet (1-4) of contact cooling sprayer (1-3) is 2, is divided into upper perforated plate (1-4-1) and is positioned at the lower perforated plate (1-4-2) of upper perforated plate (1-4-1) below; Water inlet pipe branch (1-2) is 1 and goes up water inlet pipe (1-2-1) and 1～3 following water inlet pipe (1-2-2); The part of last water inlet pipe (1-2-1) is in housing (1-1) inside, remainder is in housing (1-1) outside, last water inlet pipe (1-2-1) be in the top that part in the housing (1-1) is positioned at upper perforated plate (1-4-1), and its delivery port is positioned at the central part top of upper perforated plate (1-4-1); Following water inlet pipe (1-2-2) is in housing (1-1) outside, and its delivery port is arranged on housing (1-1) and upward and with the inner chamber of housing (1-1) communicates, and this delivery port is positioned between upper perforated plate (1-4-1) and the lower perforated plate (1-4-2); Set water entering section (1-6) is positioned at upper perforated plate (1-4-1) top on the upper end of the body of every single tube of tubulation (1-5); The gas balance mouth (1-5-1) of every single tube of tubulation (1-5) is positioned on the pipeline section of lower perforated plate (1-4-2) below; The body of every single tube of tubulation (1-5) and upper perforated plate (1-4-1) are sealedly and fixedly connected, and upper perforated plate (1-4-1) is fixedlyed connected with the inner wall sealing of the annular side plate (1-1-3) of housing (1-1); The body of every single tube of tubulation (1-5) is weldingly fixed on the lower perforated plate (1-4-2), and leaves the gap between the part hole wall of the corresponding pore (1-4-3) of every single tube and lower perforated plate (1-4-2); Lower perforated plate (1-4-2) is weldingly fixed on the annular side plate (1-1-3) of housing (1-1).

4, according to the described a kind of desulfurization dust collector for industrial furnace of one of claim 1 to 3, it is characterized in that: desulfurizing dust-collector (1) also comprises 1 air exhauster (1-8), and air exhauster (1-8) is in the housing (1-1) and is positioned at the upper end open place of housing (1-1).

5, a kind of desulfurization dust collector for industrial furnace, has desulfurizing dust-collector (1), this desulfurizing dust-collector (1) comprises housing (11), it is characterized in that: also comprise water inlet pipe (12), blow-off pipe (19), water distributor (2), contact cooling sprayer (4) and stop cap (7); The upper end open of housing (11); Housing (11) has gas approach (11-1), annular bottom plate (11-2) and annular side plate (11-3), gas approach (11-1) is positioned at the central authorities of annular bottom plate (11-2), annular bottom plate (11-2) and the airtight below that links together and be positioned at annular side plate (11-3) of annular side plate (11-3); Annular bottom plate (11-2) is obliquely installed by low inside and high outside mode, and annular bottom plate (11-2) is provided with the delivery port that is positioned at lowest part, the airtight connection of water inlet of this delivery port and blow-off pipe (19); Stop that cap (7) is that down surface is conical structural member; Water distributor (2), contact cooling sprayer (4) and stop that cap (7) is according to being set in sequence in the housing (11) from top to bottom; The airtight connection of water inlet of the delivery port of water inlet pipe (12) and water distributor (2); Water distributor (2) comprises that header tank (21) and water inlet are arranged on 6～12 outlet pipes (22) on header tank (21) top; The delivery port of each outlet pipe (22) is towards contact cooling sprayer (4); The space that is centered between the inner surface of the upper surface of the annular bottom plate (11-2) of the lower end of contact cooling sprayer (4), the upper surface that stops cap (7), housing (11) and the annular side plate (11-3) of housing (11) is spray district (11-4).

6, a kind of desulfurization dust collector for industrial furnace according to claim 5 is characterized in that: contact cooling sprayer (4) is a tubulation contact cooling sprayer, and this tubulation contact cooling sprayer has tubulation (41) and 2 tube sheets; 2 tube sheets are divided into upper perforated plate (42) and are positioned at the lower perforated plate (43) of upper perforated plate (42) below; Each single tube of tubulation (41) is parallel to each other and vertically is provided with, the equal opening of body upper and lower side of every single tube, every single tube of tubulation (41) passes the last corresponding pore (42-1) of upper perforated plate (42) and lower perforated plate (43) is gone up corresponding pore (43-1), the upper end of the body of every single tube is positioned at the top of upper perforated plate (42), and the lower end of the body of every single tube is positioned at the below of lower perforated plate (43); The body of every single tube of tubulation (41) and upper perforated plate (42) are sealedly and fixedly connected, and upper perforated plate (42) is fixedlyed connected with the inner wall sealing of the annular side plate (11-3) of housing (11); The body of every single tube of tubulation (41) also is weldingly fixed on lower perforated plate (43), and leaves the gap between the part hole wall of the corresponding pore (43-1) of every single tube and lower perforated plate (43); Lower perforated plate (43) is weldingly fixed on the annular side plate (11-3) of housing (11); Comprise in the outlet pipe (22) of water distributor (2) that delivery port is positioned at upper perforated plate (42) edge and is positioned at the upper water-out pipe (22-1) of upper perforated plate (42) top and comprises that delivery port is positioned at the lower discharging tube (22-2) between upper perforated plate (42) and the lower perforated plate (43).

7, a kind of desulfurization dust collector for industrial furnace according to claim 6 is characterized in that: desulfurizing dust-collector (1) comprises that also 6～20 are arranged in the spray district (11-4) and are positioned at the eddy flow guide plate (6) that stops cap (7) top; The shape of every eddy flow guide plate (6) is identical, be a tetragonal plate, its top edge is horizontal, inner edges and outward flange all form 90 ° of angles with top edge, and outward flange length is greater than the length of inward flange, it is low inside and high outside skewed that thereby lower limb is, and inclination angle γ is 20～35 °; The plate body of each eddy flow guide plate (6) is weldingly fixed on the annular side plate (11-3) of housing (11) by its outer ledge, and residing height and position is identical; On sustained height, the plate body of each eddy flow guide plate (6) is 5～15 ° angle with the diametric(al) of the housing (11) of its outer ledge of process, and the outer ledge of each eddy flow guide plate (6) is according to being 20～40 ° angle setting with vertical direction, thereby go up at various height around a corresponding imaginary circle setting inside edge that makes each eddy flow guide plate (6), the magnitude range of this imagination diameter of a circle be housing (11) diameter 20%～30%.

8, a kind of desulfurization dust collector for industrial furnace according to claim 7 is characterized in that: desulfurizing dust-collector (1) also comprises dissepiment net atomising device (5); Dissepiment net atomising device (5) is arranged in the spray district (11-4) and is positioned between contact cooling sprayer (4) and the eddy flow guide plate (6); Dissepiment net atomising device (5) comprises netted base plate (51) and the vertical parallel upward composition of netted base plate (51) that closely is arranged in of each atomizing cup (52); Each atomizing cup constitutes by the diamond hole web plate coiled of steel is cylindric.

9, according to the described a kind of desulfurization dust collector for industrial furnace of one of claim 5 to 8, it is characterized in that: stop that cap (7) is provided with the cap that stops of current rotary part (72) for upper surface; Stop that cap (7) comprises cap body (71) and current rotary part (72); Current rotary part (72) comprises truncated cone-shaped housing (72-1) and is weldingly fixed on 6～12 strip connecting plates (72-2) on truncated cone-shaped housing (72-1) lower surface, strip connecting plate (72-2) be shaped as involute shape; Each strip connecting plate (72-2) of current rotary part (72) is centrosymmetric and is arranged on the truncated cone-shaped housing (72-1), and current rotary part (72) is weldingly fixed on the upper surface of cap body (71) by the lower surface of its each connecting plate (72-2); The lower edge of truncated cone-shaped housing (72-1) exceed cap body (71) apart from s be cap body (71) diameter 5%～10%.

10, according to the described a kind of desulfurization dust collector for industrial furnace of one of claim 5 to 8, it is characterized in that: desulfurizing dust-collector (1) also comprises 1 air exhauster (18), and air exhauster (18) is in the housing (11) and is positioned at the upper end open place of housing (11).

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