CN103586248A

CN103586248A - Dust removal method for dry method furnace tube knotting process

Info

Publication number: CN103586248A
Application number: CN201210288100.XA
Authority: CN
Inventors: 李春林
Original assignee: Permanent Beihai Tiancheng Technology Development Ltd Co
Current assignee: Permanent Beihai Tiancheng Technology Development Ltd Co
Priority date: 2012-08-14
Filing date: 2012-08-14
Publication date: 2014-02-19
Anticipated expiration: 2032-08-14
Also published as: CN103586248B

Abstract

Disclosed is a dust removal method for the dry method furnace tube knotting process. The efficient dust removal method which can adapt to the current manual operation and can be suitable for the automatic operation which is transformed in the future is designed out based on the research which is performed on the traditional manual furnace tube knotting process. According to the dust removal method for the dry method furnace tube knotting process, an annular dust hood which is suitable for the furnace tube knotting is designed first, then a novel discharging hopper is designed, and accordingly an operator can discharge materials and efficiently collect dust simultaneously as usual through the standardized operation process.

Description

A kind of method for the dedusting of dry method stove cylinder knotting operation

one, technical field

The present invention is applied to the dedusting of ferroalloy enterprise stove cylinder knotting.

two, background technology

Ferroalloy enterprise is the severely afflicated area of dust pollution, except traditional smelting process, many operations of production process all can produce a large amount of dust, and because the automaticity of most of operation is not high, and during design, may not consider the factors such as dedusting, to dedust innovation, cause very large difficulty.The knotting of dry method stove cylinder is by arriving a process of stove cylinder outer ring under hopper by the slag after dry magnesia or fragmentation, from hopper, to stove cylinder, can produce a large amount of airborne dusts, in stove cylinder vibration processes, also can produce a large amount of airborne dusts, traditional dust collection method is that stove cylinder knotting operation is put into an airtight room, guarantee that dust is not excessive, but can not reduce the dust concentration of operating post, and investment is also larger.The stove cylinder knotting operation dedusting that the present invention describes is exactly the stove cylinder ramming process of having studied traditional-handwork, works out on this basis a kind ofly both can adapt to the high-effective dust-removing under current manual manipulation method, and can be applicable to automation in the future and change the dedusting after walking.

three, summary of the invention

The present invention is a kind of high-efficiency dust removal system of design, and appropriate reconstruction operating procedure, can reach with minimum air quantity best dust removing effects, and operator can keep present operating habit constant substantially.

First the present invention is achieved in that, the double-deck suspended hood of a umbrella of design, diameter equal the to tie a knot external diameter of road cylinder, mainly utilizes the annulus air channel between double casing to carry out dust suction, the width of annulus equates with the width of knotting slag or is smaller, guarantees trapping airborne dust efficiently; Secondly, design one and be rotatably connected, and design hoisting mechanism, allow when placing stove cylinder etc. and not needing dedusting, dust excluding hood can be promoted to the position parallel with wall, and operative employee can normal operating; finally, transform present hopper, present hopper leg and discharging opening are transformed into cover leg and the sleeve of dismountable moving, shorten hopper and stove cylinder distance, discharging opening is more pressed close to stove cylinder, handled easily person blanking, can not clash into dust excluding hood again, reduce airborne dust and be convenient to land.

Feature of the present invention: the first, design double-deck dust shield, allow air quantity focus on the place of producing dirt, dust collection efficiency is high, and operating post does not have dust; The second, design can promote to obtain mechanism, allows fan housing mention when not dedusting, does not hinder other operations such as crane; The 3rd, transformation discharging hopper structure, but operative employee can keep present mode of operation not hinder dust shield.

four, accompanying drawing explanation:

Accompanying drawing 1: fan housing design drawing;

Accompanying drawing 2: fan housing lifting schematic diagram;

Accompanying drawing 3: drain hopper transformation schematic diagram;

Accompanying drawing 4: schematic diagram is collected in dedusting;

Accompanying drawing 5: general umbrella cover dedusting schematic diagram;

Accompanying drawing 6: double-deck annular umbrella-like cover dedusting schematic diagram.

five, the specific embodiment

The stove cylinder of 3000KVA iron alloy electric furnace of take is example, and stove cylinder diameter is 2.4 meters, and height is 1.18 meters.

One) specification:

1. fan housing: refer to design instruction accompanying drawing 1

2. promote: refer to Figure of description 2

3. hopper refers to Figure of description 3

4. dust removing effects explanation refers to explanation accompanying drawing 5 and explanation accompanying drawing 6:

Two) duty explanation:

1. stove cylinder SBR:

Before the knotting of stove cylinder, operative employee will clean place, and stove cylinder is hung to shaking platform from storeroom, and stove circle fixed support is good, at this time, has crane above platform, and has people's operation, and fan housing is in rising wall, minimum on the impact of producing.

2. the reinforced state of stove cylinder:

When be ready to reinforced after, dust excluding hood is put down with stove cylinder and alignd, open air-supply switch simultaneously, or by dropping to as signal notice intelligent air supply system, dust pelletizing system operation, the suction at place, dust excluding hood air port will reach 6M/S, and after hopper blanking, dust rises toward upper punch, be inhaled into dedusting pipeline, until reinforced, finish.Dust can not escaped from, and operator post dust can reach post standard.

3. stove cylinder vibrational state:

The reinforced state of stove cylinder vibrational state and stove cylinder can hocket, and also may carry out simultaneously, and cleaner in working order.

4. completion status:

Stove cylinder has been tied a knot, and stove cylinder will be left under order, and carries out other work, and dust excluding hood rises, and does not take working space.

Three) dust excluding hood effect explanation:

Do not consider blast, atmospheric density, etc. the impact of external factor, two kinds of dust excluding hoods are all in perfect condition:

If main pipeline wind speed V=20m/s, main pipeline diameter is D=0.45m, outside dust excluding hood collar extension diameter d=2.4m, internal orifice is straight

In the d of footpath=2.27m calculates:

1. main pipeline air quantity:

According to air quantity L=VF(V wind speed; F cross section)

　　　L=V·F=V(D/2)2·π=20m?/s×(0.45/2m)2×3.14=3.18m3/s

2. general umbrella dust excluding hood wind speed calculates:

2 * the 3.14=4.52m2 of a cover mouthful cross section F1=(d outer/2) 2 π=(2.4/2m)

L=V1F1 V1=L/F1 event: V1 ≈ 0.79m/s

3. double-deck annular umbrella-like dust excluding hood wind speed calculates:

A cover mouthful cross section F2=in (d is outward/2) 2-(d/2) 2 π=(2.4m/2) 2-(2.27m/2) and 2 ］ * 3.14=0.48m2

L=V2F2 V2=L/F2 event: V2 ≈ 6.67m/s

According to above calculating, F=VL is under identical air quantity F, and the size of wind speed V is mainly determined by sectional area F; The design of double casing makes the draught area in air channel dwindle approximately 10 times than the design of universal cover, so the wind speed of double casing improves approximately 10 times than the wind speed of common cover.Under same air quantity, double-deck annular umbrella-like dust excluding hood can reach the most excellent dust removing effects, is the injury that post personnel have avoided dust; If under identical wind speed, the design of double-deck annular umbrella-like dust excluding hood makes main pipeline wind speed reduce approximately 10 times, therefore reaches the dust removing effects of efficient energy-saving.　

Claims

1. the method for the dedusting of dry method stove cylinder knotting operation, the invention is characterized in: fully understand the operation of ferroalloy dry method stove cylinder and produce dirt feature, design efficient dust excluding hood and operating procedure, can, in the situation that not changing existing mill construction and main operating procedure, realize the high-effective dust-removing of this operation.

2. the method for stove cylinder knotting operation according to claim 1 dedusting, is characterized by: design and meet the bilayer annular dust excluding hood that produces dirt feature, can save air quantity, reach high-effective dust-removing.

3. the method for stove cylinder according to claim 1 knotting operation dedusting, is characterized by: can utilize hoisting mechanism, design and can pack up the dust excluding hood putting down, can during not in dedusting state, be mentioned, thereby not affect the operations such as overhead traveling crane at equipment.

4. the method for stove cylinder knotting operation according to claim 1 dedusting, is characterized by: existing hopper is carried out to suitable transformation, and it is adapted to can normal cloth while having added dust excluding hood on stove cylinder.

5. the method for stove cylinder knotting operation according to claim 1 dedusting, is characterized by: formulate the method for operating of operation method and the cloth of a set of dust excluding hood, not only can guarantee dedusting but also do not change technique.