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CN-224212688-U - Recycling device for primary dedusting coarse ash of converter

CN224212688UCN 224212688 UCN224212688 UCN 224212688UCN-224212688-U

Abstract

The utility model relates to the technical field of steel smelting and resource recovery, and provides a recycling device for primary dedusting coarse ash of a converter, which comprises a cooling tank body, wherein a cooling cavity is formed in the cooling tank body, an ash bucket communicated with the cooling cavity is arranged at the bottom of the cooling tank body, an ash outlet is formed in the bottom of the ash bucket, and the ash bucket is used for collecting coarse ash and discharging the coarse ash through the ash outlet; the ash bucket is also provided with a gas outlet, a blanking grille is arranged in the ash bucket, the blanking grille divides the interior of the ash bucket into an air flow channel and an ash falling cavity, a plurality of wind shielding baffles are arranged on the blanking grille, an ash passing gap is formed between two adjacent wind shielding baffles, and the air flow channel is communicated with the ash falling cavity through the ash passing gap. Through the technical scheme, the technical problems of low coarse ash recycling rate and poor system operation stability caused by coarse ash secondary entrainment due to vortex formation caused by uneven flue gas flow velocity of an ash bucket of an evaporative cooler in a primary dust removal system for converter steelmaking in the prior art are solved.

Inventors

  • FENG KAI
  • FENG JIANHUA
  • ZHANG JICAI
  • ZHENG XU
  • JIANG CHENGCHANG

Assignees

  • 北京合壹北科环保科技有限公司
  • 北京嘉捷汉华机电设备有限公司

Dates

Publication Date
20260508
Application Date
20250606

Claims (10)

  1. 1. The utility model provides a cyclic utilization device of converter primary dust removal coarse ash which characterized in that includes: The cooling device comprises a cooling tank body (1), wherein a cooling cavity (101) is formed in the cooling tank body (1), an ash bucket (2) communicated with the cooling cavity (101) is arranged at the bottom of the cooling tank body (1), an ash outlet (201) is formed in the bottom of the ash bucket (2), the ash bucket (2) is used for collecting coarse ash and discharging the coarse ash through the ash outlet (201), and a gas outlet (202) is further formed in the ash bucket (2) and is used for discharging gas after the coarse ash is removed; Be equipped with blanking grid (3) in ash bucket (2), blanking grid (3) will ash bucket (2) internal separation is wind flow channel (203) and ash falling cavity (204), cooling chamber (101) wind flow channel (203) with gas outlet (202) communicate in proper order for form the passageway of gas flow, be equipped with a plurality of baffle (4) that keep out the wind on blanking grid (3), form between two adjacent baffle (4) and lead to ash clearance (401), wind flow channel (203) with pass through between ash falling cavity (204) lead to ash clearance (401) intercommunication.
  2. 2. The recycling device for primary dedusting coarse ash of a converter according to claim 1, wherein the ash bucket (2) is an inverted cone bucket with a gradually reduced cross-sectional area from top to bottom, the gas outlet (202) is communicated with the top of the ash bucket (2), and the ash outlet (201) is positioned at the bottom of the ash bucket (2).
  3. 3. The recycling device for primary dust removal coarse ash of a converter according to claim 1, wherein the blanking grid (3) is provided with a bottom edge part (301), two ash guiding oblique sides (302) are respectively arranged on two sides of the bottom edge part (301), the inclined directions of the ash guiding oblique sides (302) are the same as those of the inclined inner wall of the ash bucket (2), the bottom edge part (301) is provided with concentrated ash falling holes (303), and the bottom edge part (301) is used for converging coarse ash and discharging the coarse ash into an ash falling cavity (204) through the concentrated ash falling holes (303).
  4. 4. The recycling device for primary dedusting coarse ash of a converter according to claim 1, wherein in the wind flow channel (203), the wind shielding baffles (4) are sequentially arranged along the direction of gas flow, and the included angle between the wind shielding baffles (4) and the horizontal direction along the direction of gas flow is gradually increased, so that the direction of gas flow and the extending direction of the ash passing gap (401) always form an included angle.
  5. 5. The recycling device for primary dust-removing coarse ash of a converter according to claim 3, further comprising: The first rotating partition piece (5), the first rotating partition piece (5) rotates through pivot (501) to be set up in concentrating the ash hole (303), the direction of rotation of first rotating partition piece (5) is the same with the gas flow direction, first rotating partition piece (5) are equipped with a plurality of first turnover plates (6) along pivot (501) circumference, first rotating partition piece (5) are configured to, after being driven by the air current and rotate, drive then first turnover plate (6) block or cancel and keep off concentrated ash hole (303).
  6. 6. The recycling device for primary dust-removing coarse ash of a converter according to claim 5, further comprising: The second rotates the separator (7), second rotate separator (7) with first rotation separator (5) is synchronous and the syntropy rotates and sets up concentrate in grey hole (303), be equipped with second on the second rotates separator (7) and turn over board (8), be equipped with first broach portion (601) on first board (6), be equipped with second broach portion (801) on the second board (8), first rotation separator (5) with after second rotation separator (7) are configured to be driven the rotation by the air current, first broach portion (601) with second broach portion (801) dislocation rotation each other to stir thick grey, and make thick grey get into grey chamber (204) under the rotation drive of first broach portion (601) with second broach portion (801).
  7. 7. The recycling device for primary dust removal coarse ash of a converter according to claim 1, further comprising: The bucket elevator (9), bucket elevator (9) are equipped with and promote feed inlet (901), ash outlet (201) open into promotion feed inlet (901), bucket elevator (9) are used for upwards promoting the transport of the coarse ash that discharges from ash outlet (201).
  8. 8. The recycling device of primary dust-removing coarse ash of a converter according to claim 7, characterized in that a lifting outlet (902) and an intermediate ash collection bin (903) are arranged at the top of the bucket elevator (9), and the lifting outlet (902) is led to the intermediate ash collection bin (903).
  9. 9. The recycling device of primary dedusting coarse ash of a converter according to claim 1, wherein a flap valve is arranged in the ash outlet (201) for closing or opening the ash outlet (201).
  10. 10. The recycling device for primary dedusting coarse ash of a converter according to claim 8, wherein a weighing device is arranged on the middle ash collecting bin (903) and is used for weighing the weight of coarse ash in the ash collecting bin.

Description

Recycling device for primary dedusting coarse ash of converter Technical Field The utility model relates to the technical field of steel smelting and resource recovery, in particular to a recycling device for primary dedusting coarse ash of a converter. Background In the primary dust removal system for converter steelmaking, an evaporative cooler is used as core equipment and plays an important role in cooling high-temperature flue gas and primarily separating coarse ash (the coarse ash has high iron content and has recycling value). The design of the cone section of the ash bucket at the bottom of the cooler is initially to realize coarse ash sedimentation by utilizing gravity, but the prior art has the obvious defects that on one hand, the flow velocity of the flue gas in the cooler is unevenly distributed, and a vortex effect is formed in the cone section area of the ash bucket. This vortex can re-entrain the settled coarse ash into the flue gas, resulting in inefficient coarse ash capture and entry of a large amount of insufficiently separated coarse ash into subsequent processing equipment along with the flue gas. On the other hand, components such as CaO contained in the coarse ash are liable to absorb moisture and agglomerate, and "ash lumps" are formed at the bottom of the ash bucket. The agglomeration not only prevents coarse ash from normally sliding down, but also further aggravates vortex disturbance, even forces equipment to stop for manual ash removal, and remarkably increases operation and maintenance cost. In addition, the pressure fluctuation in the cooler caused by vortex can influence the stable operation of the fan and other matched equipment, and the continuous scouring of high-speed ash particles to the inner wall of the ash bucket can aggravate the equipment abrasion, so that the abrasion-resistant parts are frequently replaced. The recycling of the defect formation not only causes low recycling rate of the coarse ash and waste of iron resources, but also causes load increase and system energy consumption increase of follow-up dust removing equipment, and causes the recycling efficiency of the coarse ash of the converter to be insufficient. Disclosure of utility model In order to overcome the defects, the utility model provides a recycling device for primary dedusting coarse ash of a converter, and solves the technical problems of low coarse ash recycling rate and poor system operation stability caused by secondary entrainment of coarse ash due to vortex formation caused by uneven flue gas flow velocity of an evaporative cooler ash hopper in a primary dedusting system for converter steelmaking in the prior art. According to one aspect, at least one embodiment of the present utility model provides a recycling device for primary dust removal coarse ash of a converter, including: the cooling tank body is internally provided with a cooling cavity, the bottom of the cooling tank body is provided with an ash bucket communicated with the cooling cavity, the bottom of the ash bucket is provided with an ash outlet, and the ash bucket is used for collecting coarse ash and discharging the coarse ash through the ash outlet; Be equipped with blanking grid in the ash bucket, blanking grid will separate in the ash bucket for wind flow channel and ash falling cavity, the cooling chamber wind flow channel with the gas outlet communicates in proper order for form the passageway of gas flow, be equipped with a plurality of baffles that keep out the wind on the blanking grid, form between two adjacent baffles and lead to the ash clearance, wind flow channel with pass through between the ash falling cavity lead to the ash clearance intercommunication. For example, the recycling device for primary dedusting coarse ash of a converter provided by at least one embodiment of the present disclosure, the ash bucket is an inverted cone bucket with a gradually reduced cross-sectional area from top to bottom, the gas outlet is communicated with the top of the ash bucket, and the ash outlet is located at the bottom of the ash bucket. For example, the recycling device for primary dedusting coarse ash of a converter provided by at least one embodiment of the disclosure, wherein the blanking grille is provided with a bottom edge part, two ash guiding bevel edges are respectively arranged on two sides of the bottom edge part, the inclined direction of each ash guiding bevel edge is the same as that of the inclined inner wall of the ash bucket, the bottom edge part is provided with a concentrated ash dropping hole, and the bottom edge part is used for converging coarse ash and discharging the coarse ash into an ash dropping cavity through the concentrated ash dropping hole. For example, in the recycling device for primary dedusting coarse ash of a converter provided by at least one embodiment of the present disclosure, in the airflow channel, the wind shielding baffles are sequentially arranged along the direction of gas