CN219423952U - Dry quenching primary dust remover and dry quenching equipment - Google Patents

Abstract

The embodiment of the application provides a dry quenching primary dust remover and dry quenching equipment, wherein the dry quenching primary dust remover comprises a shell, the shell comprises an air inlet, an air outlet and an ash outlet, the air inlet is used for being communicated with a dry quenching furnace, and the air outlet is used for being communicated with a boiler; be equipped with in the casing and be located between air inlet and the gas outlet, at least along gas circulation direction interval arrangement's first barricade and second barricade, the orthographic projection of first barricade in second barricade department is at least partial misalignment with the second barricade, and the width of first barricade and second barricade is less than the width of casing to can form the air flue that is used for circulating gas to pass through between first barricade and the casing and between second barricade and the casing.

Description

Dry quenching primary dust remover and dry quenching equipment

Technical Field

The application relates to the technical field of dust removal, in particular to a dry quenching primary dust remover and dry quenching equipment.

Background

In the dry quenching engineering application, the temperature of the circulating gas coming out of the annular channel of the dry quenching furnace is between 900 and 980 ℃, and a large amount of coke dust is contained. In order to reduce the scouring influence of high-temperature coke dust on the whole set of dry quenching equipment, a primary dust remover is used for removing coarse-grain coke powder contained in circulating gas so as to reduce the abrasion to the furnace tube of the dry quenching boiler.

There are two types of dust removal methods commonly used at present, one is: a retaining wall is arranged in the primary dust remover, and the coke powder is settled by impacting the retaining wall. In the dust removing mode, after the circulating gas bypasses the retaining wall, the flowing direction of the circulating gas is upward, and a large amount of settled coke powder can be entrained to enter subsequent equipment. The other is that no retaining wall is arranged, and the dust naturally subsides by self gravity. The dust removing mode is that large-particle coke powder falls into a coke powder bin only when the falling kinetic energy of the large-particle coke powder is larger than the horizontal moving energy of the gas flow, and small-particle coke powder can enter subsequent equipment along with the gas under the unconstrained condition.

The two dust removing modes have the defects that part of coke powder is carried by circulating gas to enter subsequent equipment, the dust removing efficiency is low, and the like.

Disclosure of Invention

The embodiment of the application aims to provide a dry quenching primary dust remover and dry quenching equipment so as to improve the dust removal efficiency of the dry quenching primary dust remover. The specific technical scheme is as follows:

the embodiment of the first aspect of the application provides a dry quenching primary dust remover, which comprises a shell, wherein the shell comprises an air inlet, an air outlet and an ash outlet, the air inlet is used for being communicated with a dry quenching furnace, and the air outlet is used for being communicated with a boiler; be equipped with in the casing and be located the air inlet with be equipped with first barricade and the second barricade of gas outlet between at least along gas circulation direction interval arrangement, first barricade be in orthographic projection of second barricade department with the at least partial misalignment of second barricade, first barricade with the width of second barricade is less than the width of casing, so that first barricade with between the casing and second barricade with can form the air flue that is used for circulating gas to pass through between the casing.

In addition, the refrigeration system according to the embodiment of the application can also have the following technical characteristics:

in some embodiments, the second retaining wall at least comprises a first retaining plate and a second retaining plate which are arranged at the same interval, and the orthographic projection of the first retaining wall at the position of the second retaining wall is at least partially overlapped with the interval between the first retaining plate and the second retaining plate.

In some embodiments, along a direction perpendicular to the gas flowing direction, the first retaining wall is located at a middle position of the housing, and sidewalls of the first retaining wall and the second retaining wall, which are far away from each other, are respectively in contact with an inner wall of the housing.

In some embodiments, the dry quenching primary dust remover further comprises a third retaining wall which is arranged with the first retaining wall and the second retaining wall at intervals along the gas circulation direction, and the orthographic projection of the third retaining wall at the position of the second retaining wall at least covers the interval between the first retaining wall and the second retaining wall.

In some embodiments, the side of the first retaining wall and/or the second retaining wall facing the air inlet is arched.

In some embodiments, the dry quenching primary dust remover further comprises a water tank, water wall pipes are arranged in the first retaining wall and the second retaining wall, the water wall pipes are of a roundabout structure, each water wall pipe comprises a water inlet and a water outlet, the water inlet is communicated with the water tank, and the water outlet is communicated with the water inlet of the boiler.

In some embodiments, the top wall of the shell is of a steel structure, a steel supporting beam is arranged on the top wall of the shell, and the top ends of the first retaining wall and the second retaining wall are connected with the steel supporting beam; the water wall pipe is connected with the top wall; the head end and the tail end of the water wall pipe penetrate through the top wall so that the water inlet and the water outlet are positioned on the outer side of the top wall.

In some embodiments, a plurality of anchoring elements are further arranged on the water wall pipe, heat-resistant and wear-resistant castable is coated on the outer wall of the water wall pipe, and the anchoring elements are used for anchoring the heat-resistant and wear-resistant castable.

In some embodiments, the housing includes a body portion and an extension portion connected to the body portion and extending downward, the ash outlet is located at a distal end of the extension portion, and a cross-sectional area of the extension portion is smaller than a cross-sectional area of the body portion.

Embodiments of the second aspect of the present application provide a dry quenching apparatus comprising a dry quenching primary dust collector of any of the above.

The embodiment of the application provides a dust remover of coke dry quenching sets up between dry quenching stove and boiler, and circulating gas in the dry quenching stove flows in the air inlet entering casing through the casing after flowing out from annular channel, and the coke powder after striking with the barricade passes through the ash outlet and discharges, and circulating gas after the dust removal is discharged in the boiler through the gas outlet again, for boiler heating. The dry quenching primary dust remover is internally provided with at least two layers of retaining walls of the first retaining wall and the second retaining wall, the first retaining wall and the second retaining wall are arranged at intervals in the shell along the gas circulation direction, the widths of the first retaining wall and the second retaining wall are smaller than those of the shell, an air channel for circulating gas to pass through can be formed between the first retaining wall and the shell and between the second retaining wall and the shell, the air channel is positioned on one side or two sides of the inner wall of the first retaining wall, which is close to the shell, so that the flow direction of the circulating gas is kept horizontal, the circulating gas does not need to pass through the bottom of the first retaining wall, and the circulating gas does not flow in the vertical direction, so that the vertical upward gas flow can take away the settling coke powder. So that the circulating gas can continue to travel forward along the ventilation flue. And because the quantity of barricade is two-layer at least, can make circulating gas pass through at least twice striking in the casing, can carry out the secondary striking to the coke powder that once strikes the escape, subside in dry quenching primary dust remover lower part finally to be discharged by the ash hole. Through setting up at least two-layer barricade, increased the striking number of times of burnt powder in the dust remover casing, can effectively increase the proportion that burnt powder subsided to reduce the burnt powder volume of follow-up equipment of entering along with circulating gas, effectively improve dust collection efficiency.

Through setting up at least two-layer barricade, circulation gas can continue striking the second barricade through the in-process of first barricade striking, through the increase of striking number of times, can fully hit down the dust in the circulation gas, and then improve the dust collection efficiency of dust remover. The amount of coke powder carried out by the circulating gas is reduced, abrasion of equipment such as boilers, furnace tubes and circulating fan blades in a subsequent dry quenching system is protected, the service life of the equipment is prolonged, and the maintenance cost of the equipment can be saved. And the dust removal efficiency is improved through the mode of striking many times, and the air flue can be located the both sides of barricade along the gas flow direction, and circulating gas only flows in the horizontal direction, and is perpendicular with the burnt powder decline direction, can also reduce the air current to the interference of burnt powder in the decline in-process. Of course, not all of the above-described advantages need be achieved at the same time in practicing any one of the products of the present application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly introduce the drawings that are required to be used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic illustration of a first dry quenching primary dust collector provided in an embodiment of the present application;

FIG. 2 is a schematic illustration of a second dry quenching primary dust collector provided in an embodiment of the present application;

FIG. 3 is a third dry quenching primary dust collector provided in an embodiment of the present application;

fig. 4 is a fourth dry quenching primary dust collector provided in an embodiment of the present application;

FIG. 5 is a front perspective view of a fourth dry quenching primary dust collector provided in an embodiment of the present application;

FIG. 6 is a front perspective view of a dust collector with a retaining wall arched in accordance with an embodiment of the present application;

fig. 7 is a perspective view of a dry quenching primary dust collector provided in an embodiment of the present application.

Reference numerals:

a housing 10; an inner wall 101 of the housing; an air duct 110; an air inlet 1101; an air outlet 1102; a first retaining wall 11; a second retaining wall 12; a first baffle 1201; a second baffle 1202; a third retaining wall 13; a waterwall tube 14; a water inlet 1401; a water outlet 1402; a top wall 15; a steel support beam 151; a connecting member 152; an anchor 153; a coke breeze cooling zone 16; a gas flow direction X; the width direction Y of the housing.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. Based on the embodiments herein, a person of ordinary skill in the art would be able to obtain all other embodiments based on the disclosure herein, which are within the scope of the disclosure herein.

In order to improve the dust removal efficiency in a dry quenching system, as shown in fig. 1 to 4, the embodiment provides a dry quenching primary dust remover, the dry quenching primary dust remover comprises a shell 10, the shell 10 comprises an air inlet 1101, an air outlet 1102 and an ash outlet, the air inlet 1101 is used for being communicated with a dry quenching furnace, and the air outlet 1102 is used for being communicated with a boiler; the casing 10 is internally provided with a first retaining wall 11 and a second retaining wall 12 which are arranged between the air inlet 1101 and the air outlet 1102 at least along the air circulation direction X at intervals, the orthographic projection of the first retaining wall 11 at the second retaining wall 12 is at least partially not overlapped with the second retaining wall 12, and the width of the first retaining wall 11 and the width of the second retaining wall 12 are smaller than the width of the casing 10, so that a ventilation channel 110 for circulating air to pass through can be formed between the first retaining wall 11 and the casing 10 and between the second retaining wall 12 and the casing 10.

The embodiment of the application provides a dry quenching primary dust remover, set up between dry quenching furnace and boiler, as shown in fig. 5, circulation gas in the dry quenching furnace flows out the back through the air inlet 1101 of casing 10 and gets into in the casing 10, and the coke powder after striking with the barricade passes through the ash outlet and discharges, and the circulation gas after the dust removal is discharged into the boiler through gas outlet 1102 again, heats for the boiler. As shown in fig. 1 to 4, at least two layers of retaining walls of a first retaining wall 11 and a second retaining wall 12 are arranged in the dry quenching primary dust remover, the first retaining wall 11 and the second retaining wall 12 are arranged at intervals along the air flowing direction X in the shell 10, and the widths of the first retaining wall 11 and the second retaining wall 12 are smaller than the width of the shell 10, so that an air channel 110 for circulating air to pass through can be formed between the first retaining wall 11 and the shell 10 and between the second retaining wall 12 and the shell 10, and the air channel 110 is positioned on one side or two sides of the first retaining wall 11, which is close to the inner wall 101 of the shell, so that the flowing direction of the circulating air is kept horizontal without passing through the bottom of the first retaining wall 11, and the circulating air does not flow in the vertical direction, so that the vertically upward air flow can take away the settling coke powder. And because the quantity of barricade is two-layer at least, can make circulating gas pass through at least twice striking in casing 10, can carry out the secondary striking to the coke powder that once strikes the escape, subside in dry quenching primary dust remover lower part finally to be discharged by the ash hole.

The orthographic projection of the first retaining wall 11 at the second retaining wall 12 is at least partially overlapped with the second retaining wall 12, namely, the first retaining wall 11 and the second retaining wall 12 are staggered, so that the gas flow direction is changed into a horizontal baffling mode, the traveling distance of circulating gas can be increased, and the proportion of coke powder sedimentation is increased. And the orthographic projection of the first retaining wall 11 at the second retaining wall 12 at least partially coincides with the second retaining wall 12 includes two situations, that is, the orthographic projection of the first retaining wall 11 at the second retaining wall 12 partially coincides with the second retaining wall 12 or does not coincide at all. When the two are partially overlapped, the time for circulating gas to pass through the first baffle 1201 and the second baffle 1202 can be prolonged, so that the coke powder has enough time to settle; and when the two do not coincide at all, the effective impact area of the first baffle 1201 and the second baffle 1202 can be increased so that more coke powder is settled by impact.

Through setting up at least two-layer barricade, circulation gas is through behind the striking of first barricade 11, and the in-process that flows forward can continue striking second barricade 12, through the increase of striking number of times, can fully hit down the dust in the circulation gas, and then improves the dust collection efficiency of dust remover. The amount of coke powder carried out by the circulating gas is reduced, abrasion of equipment such as boilers, furnace tubes and circulating fan blades in a subsequent dry quenching system is protected, the service life of the equipment is prolonged, and the maintenance cost of the equipment can be saved. And the dust removal efficiency is improved through the mode of striking many times, and air duct 110 can be located the both sides of barricade along the gas flow direction, and circulating gas only flows in the horizontal direction, and is perpendicular with the burnt powder direction of falling, can also reduce the air current to the interference of burnt powder in the decline in-process.

It should be noted that the first retaining wall 11 and the second retaining wall 12 may be retaining walls that are continuously disposed, or one or both of the first retaining wall 11 and the second retaining wall 12 may be retaining walls that are disposed at intervals, which is not limited in this application.

The directions of the first retaining wall 11 and the second retaining wall 12 may be perpendicular to the gas flowing direction X, or may form a certain included angle with the gas flowing direction X. When the direction of the first retaining wall 11 and the second retaining wall 12 is perpendicular to the gas flowing direction X, the dust removing effect is best, and when the first retaining wall 11 and the second retaining wall 12 form a certain included angle with the gas flowing direction X, the impact force of the circulating gas on the first retaining wall 11 and the second retaining wall 12 can be decomposed to the direction along the gas flowing direction X, so that the impact force born by the first retaining wall 11 and the second retaining wall 12 is smaller, and the circulating gas is not easy to collapse in practical application.

In addition, compare only be equipped with the structure that a kept off the wall among the prior art, every barricade area in this application embodiment is littleer, and circulating gas passes through the barricade more easily, under the prerequisite that realizes better dust removal effect, the barricade is more difficult to collapse, and then has improved the stability of dust remover, reduces the number of times of overhauling the barricade to can improve the dust collection efficiency of dust remover.

In some embodiments of the present application, as shown in fig. 2 and 3, the second retaining wall 12 includes at least a first baffle 1201 and a second baffle 1202 spaced apart at the same interval, and the orthographic projection of the first retaining wall 11 at the position of the second retaining wall 12 at least partially coincides with the interval between the first baffle 1201 and the second baffle 1202.

In this second embodiment, as shown in fig. 2, the orthographic projection of the first retaining wall 11 at the position of the second retaining wall 12 at least partially coincides with the interval between the first baffle 1201 and the second baffle 1202, that is, the orthographic projection of the first retaining wall 11 at the position of the second retaining wall 12 at least covers the interval between the first baffle 1201 and the second baffle 1202, and the circulating gas passing through the first retaining wall 11 can directly impact the first baffle 1201 and the second baffle 1202 from the air duct 110, so that the impact area of the coke powder can be effectively increased, and the coke powder sedimentation rate is improved.

The first baffle 1201 and the second baffle 1202 may be the same size baffles or different sizes baffles. Further, the first retaining wall 11 can also be formed by the baffle that the polylith interval set up to staggered arrangement with first baffle 1201 and second baffle 1202, form effective shielding between first retaining wall 11 and the second retaining wall 12, make the part that does not shelter from at first retaining wall 11, the second retaining wall 12 can shelter from, in order to improve dust collection efficiency, the area that shelters from of second retaining wall 12 is greater than the area that shelters from of first retaining wall 11, make the fine coke after the escape of first retaining wall 11 can strike with second retaining wall 12 as far as possible, finally subside in dry quenching primary dust remover bottom and by the ash hole discharge.

In some embodiments of the present application, as shown in fig. 3, the first retaining wall 11 is located at a middle position of the housing 10 along a direction perpendicular to the gas flowing direction X, and side walls of the first retaining wall 1201 and the second retaining wall 1202, which are far from each other, are respectively disposed in contact with the inner wall 101 of the housing.

In this embodiment, as shown in fig. 3, the first baffle 1201 and the second baffle 1202 are respectively in contact with the inner wall 101 of the casing, so that the ventilation duct 110 between the first retaining wall 11 and the casing 10 can be covered by the first baffle 1201 and the second baffle 1202, so that the coke powder which is not knocked down and is coming from the ventilation duct 110 can be effectively impacted again, the sedimentation rate of the coke powder is improved, the amount of the coke powder carried by the circulating gas is reduced, the abrasion of equipment such as a boiler, a furnace tube and blades of a circulating fan in a subsequent dry quenching system is protected, the service life of the equipment is prolonged, and the maintenance cost of the equipment can be saved.

Wherein, the width of the interval between the first baffle 1201 and the second baffle 1202 may be greater than or equal to the first baffle 11, when the width of the first baffle 11 is equal to the width of the interval between the first baffle 1201 and the second baffle 1202, that is, the shielding area of the first baffle 11 and the second baffle 12 together is exactly equal to the area of the cross section of the casing 10 parallel to the width direction Y of the casing, compared with the case of only one layer of baffle, the shielding area is increased, so that the dust collection efficiency can be improved. Further, the width of the first retaining wall 11 is larger than the interval width between the first baffle 1201 and the second baffle 1202, which can further increase the shielding area, thereby further improving the dust removal efficiency.

In some embodiments of the present application, as shown in fig. 4, the dry quenching primary dust collector further includes a third retaining wall 13 spaced from the first retaining wall 11 and the second retaining wall 12 along the gas flowing direction X, and an orthographic projection of the third retaining wall 13 at the position of the second retaining wall 12 covers at least a space between the first baffle 1201 and the second baffle 1202.

In the fourth embodiment of the present application, as shown in fig. 4, since a gap exists between the first baffle 1201 and the second baffle 1202, the third retaining wall 13 is provided to further remove dust from the circulating gas passing through the air duct 110 formed between the first baffle 1201 and the second baffle 1202, so that the efficiency of the dust remover is further improved, and in particular, the third retaining wall 13 may be provided in alignment with the first baffle 1201.

In some embodiments of the present application, as shown in fig. 6, the side of the first retaining wall 11 and/or the second retaining wall 12 facing the air inlet 1101 is arched.

In this embodiment, as shown in fig. 6, the arch is toward the air inlet 1101, because the surface of the arch is streamline, the streamlined retaining wall surface can reduce windage for the first retaining wall 11 and/or the second retaining wall 12, the compressive strength and the supporting strength of the first retaining wall 11 and/or the second retaining wall 12 are increased, the first retaining wall 11 and/or the second retaining wall 12 are firmer, and the service life of the retaining wall is further prolonged, so that the dust remover can remove dust from the circulating gas better. Specifically, when the third retaining wall 13 is disposed in the housing 10, a side of the third retaining wall 13 facing the air inlet 1101 may be arched.

In some embodiments of the present application, the dry quenching primary dust remover further includes a water tank, as shown in fig. 2 and 7, a water wall pipe 14 is disposed in the first retaining wall 11 and the second retaining wall 12, the water wall pipe 14 is a circuitous structure, the water wall pipe 14 includes a water inlet 1401 and a water outlet 1402, the water inlet 1401 is communicated with the water tank, and the water outlet 1402 is communicated with the water inlet of the boiler.

In this embodiment, since the temperature of the circulating gas flowing out of the dry quenching furnace is higher, as shown in fig. 7, the water wall pipe 14 is disposed in the first retaining wall 11 and the second retaining wall 12, and specifically, the first retaining wall 11 and the second retaining wall 12 may be provided with hollow inner cavities (not shown) for disposing the water wall pipe 14, so that the high-temperature circulating gas in the housing 10 may be cooled. By arranging the water wall pipe 14, on one hand, the coke powder in the circulating gas can be prevented from being excessively adhered to the outer wall of the retaining wall, and the slag bonding phenomenon outside the first retaining wall 11 and the second retaining wall 12 can be well lightened, so that the first retaining wall 11 and the second retaining wall 12 in the shell 10 can be well protected; on the other hand, the water wall pipe 14 cools the circulating gas in the shell 10 for the first time, so that the circulating gas is cooled in advance, the temperature of the circulating gas entering the subsequent equipment is greatly reduced, and the subsequent equipment can be well protected. The water wall pipe 14 not only solves the problem of using the retaining wall in the high-temperature environment in the dust remover, but also utilizes the waste heat of the circulating gas. In addition, the hollow portions provided in the first retaining wall 11 and the second retaining wall 12 can reduce the weight of the retaining wall portions. Similarly, when the third retaining wall 13 is disposed in the housing 10, the water wall pipe 14 may be disposed in the third retaining wall 13.

The water tank is arranged outside the dry quenching primary dust remover and is used for supplying water to the water wall pipe 14, the water tank is communicated with the water wall pipe 14 through the water inlet 1401, and water in the water tank flows into the water wall pipe 14 through the water inlet 1401; the other end of the water wall pipe 14 is a water outlet 1402 for discharging heat exchanged water in the water wall pipe 14 and preheating boiler water.

In this embodiment, the circulating gas exchanges heat with the water wall tube 14 in the retaining wall in the housing 10, the heat in the circulating gas is conducted to the cooling water in the water wall tube 14, the temperature of the circulating gas is reduced, and the temperature of the water in the water wall tube 14 is increased. The water outlet 1402 of the water wall pipe 14 is communicated with the boiler, so that hot water after heat exchange in the water wall pipe 14 flows into the boiler to heat the boiler water, a boiler water supply preheater is omitted for the system, the manufacturing cost of the dry quenching system is reduced, and the occupied area of equipment of the dry quenching system is reduced.

Specifically, a water pump may be disposed between the water tank and the water wall pipe 14 so that water in the water tank flows into the water wall pipe 14 more smoothly.

As shown in fig. 7, the cooling water in the water tank flows in from one end of the water wall pipe 14 and flows out from the other end, and the water wall pipe 14 has a detour structure, so that the cooling area of the water wall pipe 14 can be increased in a limited space, and the cooling efficiency of the retaining wall for the circulating gas can be further improved. The inlet and outlet of the cooling water are arranged on the top wall 15 of the dust remover, so that the external water tank is more convenient.

In some embodiments of the present application, as shown in fig. 7, a steel support beam 151 is provided on the top wall of the housing 10, and the top ends of the first and second retaining walls 11 and 12 are connected to the steel support beam 151; the water wall tube 14 is connected with the top wall 15; the water wall tube 14 passes through the top wall 15 at both the front and rear ends thereof so that the water inlet 1401 and the water outlet 1402 are located outside the top wall 15.

In this embodiment, as shown in fig. 7, the top of the retaining wall is connected to the top wall 15 of the casing 10 through the steel supporting beam 151, so that the connection stiffness is high, and the top of the first retaining wall 11 and the top of the second retaining wall 12 can be more firmly fixed to the top wall 15, so that the retaining wall is not easy to collapse. The steel structure is provided with a connecting piece 152, one end of the connecting piece 152 is fixedly connected to the steel structure of the top wall 15, and the other end is connected to the water wall pipe 14. Specifically, the connector 152 may be a steel frame or a steel rod.

In some embodiments of the present application, as shown in fig. 7, a plurality of anchors 153 are further provided on the water wall pipe 14, and the outer wall of the water wall pipe 14 is coated with a heat and wear resistant castable, and the anchors 153 are used for anchoring the heat and wear resistant castable.

In this embodiment of the application, because the circulating gas flowing into the dry quenching primary dust remover from the dry quenching furnace has too high temperature, the high temperature circulating gas carrying the coke powder is easy to wear and erode the water wall pipe 14, so that the water wall pipe 14 can be protected by coating the heat-resistant and wear-resistant castable outside the water wall pipe 14, and further the heat resistance and wear resistance of the first retaining wall 11 and the second retaining wall 12 are improved, and the service lives of the first retaining wall 11 and the second retaining wall 12 are further prolonged.

Specifically, the anchor 153 may be a V-shaped anchor, a Y-shaped anchor, or an anchor claw, and the anchor 153 may be welded to the water wall tube 14.

In some embodiments of the present application, the housing 10 includes a body portion and an extension portion connected to the body portion and extending downward, the ash opening being located at a distal end of the extension portion, the extension portion having a cross-sectional area smaller than a cross-sectional area of the body portion.

In this embodiment, as shown in fig. 5 and 6, the extension portion may be used as a coke powder cooling area 16, where the coke powder cooling area 16 is used to cool the collided coke powder. Specifically, the shape of the coke powder cooling zone 16 may be a cone, on the one hand, the cross section of the cone is smaller than the area of the body, so that the dispersion area of the dust during discharging can be reduced, and the possibility of dust flying is reduced. On the other hand, when the coke powder is impacted to slide down, buffer cooling can be performed during the sliding down along the slope of the coke powder cooling zone 16, so that the temperature of the coke powder can be reduced during the sliding down.

Embodiments of the second aspect of the present application provide a dry quenching apparatus comprising a dry quenching primary dust collector of any one of the above.

In the embodiment of the application, circulating gas in the dry quenching furnace flows out of the annular channel and then enters the shell 10 through the air inlet 1101 of the shell 10, coke powder impacted by the retaining wall is discharged through the ash outlet, and the circulating gas after dust removal is discharged into the boiler through the air outlet 1102 to heat the boiler. The widths of the first retaining wall 11 and the second retaining wall 12 are smaller than the width of the casing 10, so that a ventilation channel 110 for circulating gas to pass through can be formed between the first retaining wall 11 and the casing 10 and between the second retaining wall 12 and the casing 10, and the ventilation channel 110 is positioned on one side or two sides of the inner wall 101, close to the casing, of the first retaining wall 11, so that the flowing direction of the circulating gas is kept horizontal, and does not need to pass through the bottom of the first retaining wall 11, and the circulating gas does not flow in the vertical direction, so that the vertically upward air flow can not take away the coke powder which is settling. Through setting up at least two-layer barricade, increased the striking number of times of burnt powder in casing 10, can effectively increase the proportion that burnt powder subsided to reduce the burnt powder volume of follow-up equipment of entering along with circulating gas, effectively improve dust collection efficiency. The orthographic projection of the first retaining wall 11 at the second retaining wall 12 is at least partially overlapped with the second retaining wall 12, namely, the first retaining wall 11 and the second retaining wall 12 are staggered, so that the gas flow direction is changed into a horizontal baffling mode, the circulating gas travelling distance can be increased, the coke powder sedimentation proportion is increased, and the dust collection efficiency of the dust collector is improved. The amount of coke powder carried out by the circulating gas is reduced, abrasion of equipment such as boilers, furnace tubes and circulating fan blades in a subsequent dry quenching system is protected, the service life of the equipment is prolonged, and the maintenance cost of the equipment can be saved.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. that are within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims (10)

1. A dry quenching primary dust remover, comprising: a housing (10), wherein the housing (10) comprises an air inlet (1101), an air outlet (1102) and an ash outlet, the air inlet (1101) is used for being communicated with a dry quenching furnace, and the air outlet (1102) is used for being communicated with a boiler; be equipped with in casing (10) be located between air inlet (1101) and gas outlet (1102), at least along first barricade (11) and second barricade (12) of gas circulation direction (X) interval arrangement, orthographic projection of first barricade (11) in second barricade (12) department with second barricade (12) are at least partly misaligned, first barricade (11) with the width of second barricade (12) is less than the width of casing (10), so that first barricade (11) with between casing (10) and second barricade (12) with can form between casing (10) be used for ventilation flue (110) that circulating gas passed through.

2. The dry quenching primary dust remover as claimed in claim 1, characterized in that the second retaining wall (12) comprises at least a first baffle (1201) and a second baffle (1202) arranged at the same interval, and the orthographic projection of the first retaining wall (11) at the position of the second retaining wall (12) is at least partially coincident with the interval between the first baffle (1201) and the second baffle (1202).

3. The dry quenching primary dust remover as claimed in claim 2, characterized in that the first retaining wall (11) is located at a middle position of the housing (10) along a direction perpendicular to the gas flowing direction (X), and side walls of the first retaining wall (1201) and the second retaining wall (1202) which are far away from each other are respectively in contact with the inner wall (101) of the housing.

4. The dry quenching primary dust remover as claimed in claim 2, further comprising a third retaining wall (13) spaced from the first retaining wall (11) and the second retaining wall (12) along the gas flowing direction (X), wherein the orthographic projection of the third retaining wall (13) at the position of the second retaining wall (12) covers at least the interval between the first retaining wall (1201) and the second retaining wall (1202).

5. The dry quenching primary dust remover as claimed in any one of claims 1-4, characterized in that the side of the first retaining wall (11) and/or the second retaining wall (12) facing the air inlet (1101) is arched.

6. The dry quenching primary dust remover as claimed in any one of claims 1-4, further comprising a water tank, wherein water wall pipes (14) are arranged in the first retaining wall (11) and the second retaining wall (12), the water wall pipes (14) are of a detour structure, the water wall pipes (14) comprise a water inlet (1401) and a water outlet (1402), the water inlet (1401) is communicated with the water tank, and the water outlet (1402) is communicated with the water inlet of the boiler.

7. The dry quenching primary dust remover as claimed in claim 6, wherein a top wall (15) of the housing (10) is provided with a steel support beam (151), and the top end of the first retaining wall (11) and the top end of the second retaining wall (12) are connected with the steel support beam (151); the water wall tube (14) is connected with the top wall (15); the water wall tube (14) passes through the top wall (15) at both ends at the head and tail so that the water inlet (1401) and the water outlet (1402) are located outside the top wall (15).

8. The dry quenching primary dust remover as claimed in claim 7, wherein a plurality of anchoring members (153) are further arranged on the water wall pipe (14), a heat-resistant and wear-resistant castable is coated on the outer wall of the water wall pipe (14), and the anchoring members (153) are used for anchoring the heat-resistant and wear-resistant castable.

9. A dry quenching primary dust remover as claimed in any one of claims 1-4, characterized in that the housing (10) comprises a body part and an extension part connected to the body part and extending downwards, the ash outlet being located at the end of the extension part, the extension part having a cross-sectional area smaller than the cross-sectional area of the body part.

10. A dry quenching apparatus, characterized in that the dry quenching apparatus comprises the dry quenching primary dust remover of any of claims 1-9.