CN218485547U

CN218485547U - Wet-type composite dehydration purifier

Info

Publication number: CN218485547U
Application number: CN202222832349.4U
Authority: CN
Inventors: 李朝东; 龙治辉
Original assignee: Chongqing Bluesky Intelligent Technology Co ltd
Current assignee: Chongqing Bluesky Intelligent Technology Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-02-17
Anticipated expiration: 2032-10-26

Abstract

The utility model belongs to the technical field of dust removal equipment for metallurgical production, in particular to a wet composite dehydration purifier, which comprises a gravity dehydration chamber and a flue gas cyclone chamber, wherein the peripheral wall of the gravity dehydration chamber is provided with an air inlet square pipe, and the bottom port part of the gravity dehydration chamber is provided with a drainage cone bucket; a Venturi tube bank is arranged in an inner cavity of the gravity dehydration chamber above the air inlet square tube through a fixed support; a plurality of water supply spraying pipes are arranged in an inner cavity of the gravity dehydration chamber above the Venturi tube bank; a cyclone assembly is arranged at the opening part at the bottom end of the flue gas cyclone chamber; an outlet header is arranged at the top opening of the flue gas swirling chamber, and an annular water baffle is arranged on the inner wall of the joint of the flue gas swirling chamber and the outlet header and used for solving the problem that in order to control the exhaust concentration of flue gas to be below 10mg/m < 3 >, wet electric equipment is additionally arranged in front of or behind a fan machine for deep dust removal, but the mode has large modification amount and higher modification cost; and the improved dust removal effect is unstable, and the problem of electric spark deflagration danger also exists.

Description

Wet-type composite dehydration purifier

Technical Field

The utility model belongs to the technical field of metallurgical production dust collecting equipment, concretely relates to compound dehydration clarifier of wet-type.

Background

In the steel smelting industry, in the process of smelting an ore raw material in a smelting furnace, a lot of smoke is generated and a lot of dust is mixed in the generated smoke, if the smoke is directly discharged into the atmosphere without being subjected to dust removal and purification treatment, serious pollution is caused to the atmospheric environment, so that the primary smoke emission index of the converter is regulated to be lower than 10mg/m < 3 > according to the requirement of a working scheme (solicited comment draft) of ultralow emission modification of a steel enterprise (environmental protection agency of 2018) published by 2018; the conventional process flow of the latest converter OG dust removal system in China at present is as follows: a converter vaporization cooling flue → a washing tower (coarse dust removal) → a venturi tube (fine dust removal) → a dehydrator → a fan, wherein the dust removal effect is generally 30-50mg/m < 3 >; a small number of environmental protection enterprises aim at optimizing and improving the interior of the system, and can control the emission concentration of the flue gas to be 20-30mg/m < 3 >.

Therefore, in order to control the exhaust concentration of the flue gas to be below 10mg/m < 3 >, a small number of iron and steel smelting enterprises add wet electric equipment in front of or behind a fan machine to carry out deep dust removal, but the change amount is large, and the change cost is high; and the dust removal effect is unstable, and the problem of electric spark explosion danger also exists.

SUMMERY OF THE UTILITY MODEL

Based on the problems mentioned in the background art, the utility model provides a wet-type composite dehydration purifier, which is used for solving the problems that in order to control the exhaust concentration of flue gas below 10mg/m3, some steel enterprises nowadays add wet electric equipment to carry out deep dust removal before or after a fan machine, but the mode has large change amount and higher change cost; and the improved dust removal effect is unstable, and the problem of electric spark explosion danger also exists.

The utility model adopts the technical scheme as follows:

a wet-type composite dehydration purifier comprises a gravity dehydration chamber and a flue gas cyclone chamber, wherein the peripheral side wall of the gravity dehydration chamber is provided with an air inlet square pipe, and the opening part at the bottom end of the gravity dehydration chamber is provided with a drainage cone hopper;

a Venturi tube bank is arranged in an inner cavity of the gravity dehydration chamber above the air inlet square tube through a fixed support; a plurality of water supply spraying pipes are arranged in an inner cavity of the gravity dehydration chamber above the Venturi tube bank;

the cyclone assembly is arranged at the opening part at the bottom end of the flue gas cyclone chamber and is connected with the opening part at the top end of the gravity dehydration chamber through a connecting part; the mouth part at the top end of the flue gas cyclone chamber is provided with an air outlet header, and the inner wall of the joint of the flue gas cyclone chamber and the air outlet header is provided with an annular water baffle.

On the basis of the technical scheme, the utility model discloses following improvement has still been made:

furthermore, a plurality of curved surface spinning disks are obliquely arranged at the mouth part of the flow channel cavity of the spinning assembly.

Further, the annular water baffle is arranged in a downward inclined mode.

Further, the nozzle of the water supply spraying pipe is arranged towards the drainage cone.

Further, venturi calandria group assembles row formula by a plurality of venturi and describes, and every row of venturi assembles on the fixed bolster through fixing bolt, venturi calandria group below is provided with a plurality of overflow basins, venturi's in the venturi calandria group bottom is located the overflow basin that corresponds respectively.

The utility model has the advantages that:

1. through the combination of the arranged Venturi tube bank and the overflow basin, after the dust removing water is sprayed out from the water supply spraying pipe, the dust removing water can flow downwards to permeate the Venturi tube bank to flow into the overflow basin below the Venturi tube bank, the dust removing water overflows from the peripheral wall of the overflow basin and flows downwards to the drainage cone hopper to be discharged, and in the process that the dust removing water overflows from the peripheral wall of the overflow basin and flows down to the drainage cone hopper, the upward moving smoke can be washed, so that the coarse dust removing operation of the smoke is realized;

2. meanwhile, as the washed smoke continuously upwells, the smoke reversely enters the overflow water basin and is divided into a plurality of branches to move upwards from the plurality of Venturi tubes, so that the moving smoke is subjected to impact washing and water viscosity capture in the direction opposite to that of water, and thus, ultra-low emission fine dust removal is realized;

3. through the arranged annular water baffle, after the flue gas is subjected to fine dust removal treatment, the upward-surging flue gas is rotated upwards along the tower wall of the flue gas cyclone chamber under the action of the cyclone assembly to be subjected to dehydration treatment, and after the flue gas is rotated upwards and touches the annular water baffle, water vapor in the flue gas can be attached to the annular water baffle, so that the dehydration operation is realized;

4. because the purifier is assembled on the smoke exhaust pipe, the converter is only transformed on a high span, the ground space of a factory building is not occupied, other steel members are not added, and the transformation cost is relatively low; the converter is only modified on a high span and is not directly assembled with the fan, so that the problem of electric spark explosion danger caused by direct assembly with the fan is solved; and the consumption of turbid circulating water and clean circulating water is not additionally increased, and gas media such as nitrogen, steam and the like are not used, so that the ultra-low emission treatment is realized by a pure wet method.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic diagram of a wet type composite dehydration purifier according to the present invention;

FIG. 2 is a cross-sectional view taken at B-B of FIG. 1;

FIG. 3 is a schematic view of the gas flow direction at a in FIG. 1;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;

FIG. 5 is a cross-sectional view taken at D-D of FIG. 1;

FIG. 6 is a cross-sectional view at F-F of FIG. 5;

FIG. 7 is a cross-sectional view taken at E-E of FIG. 1;

FIG. 8 is a block diagram of an overflow basin;

FIG. 9 is a structural view of the venturi tube;

FIG. 10 is a schematic view of the gas flow direction at b in FIG. 1;

fig. 11 is a structural view of a water supply shower.

The drawings are labeled as follows:

1. an air inlet square pipe; 2. a gravity dehydration chamber; 3. a drainage cone hopper; 4. a venturi exhaust stack; 40. a fixed bracket; 41. a venturi tube; 42. fixing the bolt; 43. an overflow basin; 5. a water supply spray pipe; 6. a connecting portion; 7. a swirl assembly; 71. a curved surface spinning disk; 8. a flue gas swirling chamber; 9. an annular water baffle; 10. and an air outlet header.

Detailed Description

As shown in fig. 1 to 11, a wet-type composite dehydration purifier comprises a gravity dehydration chamber 2 and a flue gas swirling chamber 8, wherein an air inlet square pipe 1 is arranged on the peripheral side wall of the gravity dehydration chamber 2, and the inlet of the air inlet square pipe 1 is connected with a flue gas main pipeline behind a converter primary dedusting OG system through the arranged air inlet square pipe 1, so that flue gas is introduced into the gravity dehydration chamber 2; a drainage cone hopper 3 is arranged at the opening part at the bottom end of the gravity dehydration chamber 2, and the drainage cone hopper 3 can discharge dedusting water;

referring to fig. 1, a venturi exhaust pipe group 4 is arranged in an inner cavity of the gravity dehydration chamber 2 above the air inlet square pipe 1 through a fixed bracket 40; a plurality of water supply spraying pipes 5 are arranged in an inner cavity of the gravity dehydration chamber 2 above the Venturi tube bank 4, nozzles of the water supply spraying pipes 5 are arranged towards the drainage cone 3, the arranged water supply spraying pipes 5 are connected with an external water pipe, and external dedusting water can be sprayed out downwards from the nozzles of the water supply spraying pipes 5 after being introduced into the water supply spraying pipes 5;

referring to fig. 6, 7, 8 and 10, the venturi tube bank 4 is assembled by a plurality of venturi tubes 41 in a row shape, each row of venturi tubes 41 is assembled on the fixing bracket 40 by a fixing bolt 42, a plurality of overflow basins 43 are arranged below the venturi tube bank 4, the bottom ends of the venturi tubes 41 in the venturi tube bank 4 are respectively located in the corresponding overflow basins 43, and the dust removing water sprayed from the water supply shower 5 can be contained by the arranged overflow basins 43; after the water supply spraying pipe 5 sprays the dedusting water, the dedusting water can flow downwards to permeate the Venturi tube bank 4 to flow into the overflow basin 43 below the Venturi tube bank, the dedusting water overflows from the peripheral wall of the overflow basin 43 and flows downwards to the drainage cone 3 to be discharged, and in the process that the dedusting water overflows from the peripheral wall of the overflow basin 43 and falls into the drainage cone 3, the dedusting water can wash and adhere to dust in the flue gas below the Venturi tube bank 4 and is discharged from the drainage cone 3 together in cooperation with the dedusting water so as to perform coarse dedusting operation on the flue gas;

referring to fig. 10, the flue gas after coarse dust removal continuously flows upwards, the flue gas reversely enters the overflow water basin 43 and is divided into a plurality of branches to move upwards from each venturi tube 41, so that the flue gas after coarse dust removal can be washed by impact and captured by water viscosity in a reverse direction with the water in the overflow water basin 43, and the flue gas ultra-low emission fine dust removal operation can be realized;

referring to fig. 1, a cyclone assembly 7 is arranged at the bottom end opening of a flue gas cyclone chamber 8, the cyclone assembly 7 is connected with the top end opening of a gravity dehydration chamber 2 through a connecting part 6, a plurality of curved cyclone sheets 71 are obliquely arranged at the opening of a flow channel cavity of the cyclone assembly 7, and the flue gas subjected to fine dust removal still contains part of fine particulate water which contains fine dust and is easily taken away by air flow, so that the flue gas subjected to fine dust removal moves upwards through the connecting part 6 and the cyclone assembly 7, and the flue gas subjected to fine dust removal can gush out from gaps among the curved cyclone sheets 71 in the cyclone assembly 7, so that the flue gas subjected to fine dust removal moves upwards in a rotating manner to accelerate the moving speed of the flue gas, and meanwhile, in the process of the upward movement of the flue gas in a rotating manner, the flue gas is in full contact with a tower wall of the flue gas cyclone chamber 8, so that moisture and the fine dust in the flue gas are adhered to the tower wall, and then dust removal and dehydration are completed;

referring to fig. 1 and 3, an outlet manifold 10 is arranged at the top opening of the flue gas swirling chamber 8, an annular water baffle 9 is arranged on the inner wall of the joint of the flue gas swirling chamber 8 and the outlet manifold 10, and the annular water baffle 9 is arranged in a downward inclination manner; the annular water baffle 9 is arranged, when the smoke continuously rotates and moves upwards to touch the annular water baffle 9, the water vapor in the smoke can be attached to the annular water baffle 9, and therefore the dehydration operation is achieved.

Referring to fig. 1 to 11, in use, the inlet of the air inlet square pipe 1 is connected with the flue gas main pipe behind the converter primary dedusting OG system, so that the flue gas is introduced into the gravity dehydration chamber 2; then the dedusting water is sprayed downwards from the nozzle of the water supply spraying pipe 5; after the water supply spraying pipe 5 sprays the dedusting water, the dedusting water flows downwards to seep through the Venturi tube bank 4 and flows into the overflow water basin 43 below the Venturi tube bank, the dedusting water overflows from the peripheral wall of the overflow water basin 43 and flows downwards to the drainage cone 3 to be discharged, and in the process that the dedusting water overflows from the peripheral wall of the overflow water basin 43 and flows down to the drainage cone 3, the dedusting water can wash and adhere to dust in the flue gas below the Venturi tube bank 4 and is discharged from the drainage cone 3 together in cooperation with the dedusting water so as to perform coarse dedusting operation on the flue gas;

the flue gas after coarse dust removal continuously flows upwards, the flue gas reversely enters the overflow water basin 43 and is divided into a plurality of branches to move upwards from each Venturi tube 41, so that the flue gas after coarse dust removal is subjected to impact washing and water viscosity capture in a reverse direction with the water in the overflow water basin 43, and the ultra-low emission fine dust removal operation of the flue gas can be realized; the flue gas after fine dust removal continuously moves upwards, the flue gas can gush out from gaps among the curved surface cyclone sheets 71 in the cyclone assembly 7, so that the flue gas after fine dust removal moves upwards in a rotating manner, and the flue gas is fully contacted with the tower wall of the flue gas cyclone chamber 8 in the process of the upward rotating movement of the flue gas, so that moisture and ultrafine dust in the flue gas are adhered and collected on the tower wall, and then dust removal and dehydration are completed; when the smoke continuously rotates and moves upwards to touch the annular water baffle 9, water vapor in the smoke can be attached to the annular water baffle 9, so that dehydration operation is realized, and the treated smoke can be discharged from the gas outlet header 10.

Therefore, the purifier is assembled on the smoke exhaust pipe, namely, the converter is only transformed on a high span, the ground space of a factory building is not occupied, other steel members are not added, and the modification cost is relatively low; the converter is only modified on a high span and is not directly assembled with the fan, so that the problem of electric spark explosion danger caused by direct assembly with the fan is solved; and the consumption of turbid circulating water and clean circulating water is not additionally increased, and gas media such as nitrogen, steam and the like are not used, so that the ultra-low emission treatment is realized by a pure wet method.

The present invention has been described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A wet-type composite dehydration purifier is characterized in that: the device comprises a gravity dehydration chamber (2) and a flue gas cyclone chamber (8), wherein the peripheral side wall of the gravity dehydration chamber (2) is provided with an air inlet square pipe (1), and the opening part at the bottom end of the gravity dehydration chamber (2) is provided with a drainage cone hopper (3);

a Venturi exhaust pipe group (4) is arranged in an inner cavity of the gravity dehydration chamber (2) above the air inlet square pipe (1) through a fixed support (40); a plurality of water supply spraying pipes (5) are arranged in an inner cavity of the gravity dehydration chamber (2) above the Venturi tube bank (4);

a cyclone component (7) is arranged at the opening part at the bottom end of the flue gas cyclone chamber (8), and the cyclone component (7) is connected with the opening part at the top end of the gravity dehydration chamber (2) through a connecting part (6); an outlet header (10) is arranged at the top opening of the flue gas swirling chamber (8), and an annular water baffle (9) is arranged on the inner wall of the joint of the flue gas swirling chamber (8) and the outlet header (10).

2. A wet composite dehydration purifier according to claim 1, wherein: and a plurality of curved surface spinning disks (71) are obliquely arranged at the mouth part of the flow channel cavity of the cyclone component (7).

3. A wet type composite dehydration purifier according to claim 1, characterized in that: the annular water baffle (9) is arranged in a downward inclined mode.

4. A wet type composite dehydration purifier according to claim 1, characterized in that: and the nozzle of the water supply spraying pipe (5) is arranged towards the drainage cone hopper (3).

5. A wet type composite dehydration purifier according to claim 1, characterized in that: venturi bank of tubes (4) are assembled into row formula by a plurality of venturi (41) and are described, and every row of venturi (41) is assembled on fixed bolster (40) through fixing bolt (42), venturi bank of tubes (4) below is provided with a plurality of overflow basins (43), the bottom of venturi (41) in venturi bank of tubes (4) is located in corresponding overflow basins (43) respectively.