CN201848427U

CN201848427U - Special device for hot mill bag-type dust collection

Info

Publication number: CN201848427U
Application number: CN201020587093XU
Authority: CN
Inventors: 顾云红
Original assignee: WUXI CITY YAOTONG ENVIRONMENTAL PROTECTION MACHINERY CO Ltd
Current assignee: WUXI CITY YAOTONG ENVIRONMENTAL PROTECTION MACHINERY CO Ltd
Priority date: 2010-11-02
Filing date: 2010-11-02
Publication date: 2011-06-01
Anticipated expiration: 2020-11-02

Abstract

The utility model relates to a special device for hot mill bag-type dust collection, which comprises a hot mill entrance trapping shade, a hot mill top trapping shade, a hot mill exit trapping shade, a tube knockout machine trapping shade, a sand blasting trapping shade, a bag-type dust collector, a draught fan and an exhaust funnel and is characterized in that the hot mill entrance trapping shade, the hot mill top trapping shade, the hot mill exit trapping shade, the tube knockout machine trapping shade, the sand blasting trapping shade, the bag-type dust collector, the draught fan and the exhaust funnel are connected in sequence through a pipeline. A dacron superfine fibre punched felt bag is arranged in the bag-type dust collector. Due to the fact that the dacron superfine fibre punched felt bag-type dust collector is adopted, the utility model has low investment, long service life, low running resistance of dust collector, low running energy consumption and good purification effect.

Description

A kind of isolated plant of hot-rolling mill bag-type dust

Technical field

The utility model relates to metallurgy industry hot-rolling mill dust arrester, and particularly a kind of isolated plant of hot-rolling mill bag-type dust belongs to the flue gas ash removal technical field.

Background technology

The hot-rolling mill dust arrester is that fume trap cover, sintered plate deduster, air-introduced machine, aiutage connect successively by pipeline in the prior art, the dust and the saturated vapor that produce in the hot-rolling mill high-speed rolling process, under the suction function of blower fan after fume trap cover captures, enter the sintered plate deduster via pipeline, enter atmosphere through blower fan by aiutage after the filtration.Because dust removal installation adopts the sintered plate deduster in the device, enter the dust-laden saturated vapor of sintered plate deduster, under the low temperature situation sintered plate is easily freezed in the winter time, produce freeze injury, need often to change; Filter the core parts sintered plate, form through casting mold, sintering by the macromolecular compound powder, processed complex, the production difficulty is big, thereby costs an arm and a leg, equipment investment expense height; Simultaneously, sintered plate deduster running resistance height, between 3500-4000Pa, system's total head between 6500-8000Pa, so, air-introduced machine

Energy consumption is big.

Summary of the invention

Technical problem to be solved in the utility model provides the hot-rolling mill dust arrester that a kind of dust removing effects is better, concentration of emission is low, cut down the consumption of energy.

The technical solution of the utility model is: a kind of isolated plant of hot-rolling mill bag-type dust, comprise hot-rolling mill inlet fume trap cover, hot-rolling mill top fume trap cover, hot-rolling mill outlet fume trap cover, winding arbor extraction press fume trap cover, sandblast fume trap cover, sack cleaner, air-introduced machine, aiutage, it is characterized in that: by pipeline be linked in sequence hot-rolling mill inlet fume trap cover, hot-rolling mill top fume trap cover, hot-rolling mill outlet fume trap cover, winding arbor extraction press fume trap cover, sandblast fume trap cover, sack cleaner, air-introduced machine, aiutage.Be provided with dacron ultrafine fiber Nomex cloth bag in the described sack cleaner.

Beneficial effect: because the utility model adopts dacron ultrafine fiber Nomex sack cleaner, so device can not freeze, freeze injury, the device long service life; The deduster running resistance is low, has reduced system's operation energy consumption, and system's air-introduced machine total head is low, power of motor reduces; Filter core parts dacron ultrafine fiber Nomex cloth bag, process simple and easyly, cost is low, so the equipment investment expense is low; The filtration velocity height is more than 3 times of sintered plate filter core, so plant area is economized; Concentration of emission is low, can guarantee to discharge dust concentration at 10mg/Nm ³Below.

Description of drawings

Fig. 1 is a device structure schematic diagram of the present utility model.

Among the figure, 1. hot-rolling mill inlet fume trap cover, 2. hot-rolling mill top fume trap cover, 3. hot-rolling mill outlet fume trap cover, 4. winding arbor extraction press fume trap cover, 5. sandblast fume trap cover, 6. sack cleaner, 7. air-introduced machine, 8. aiutage.

The specific embodiment:

Below in conjunction with accompanying drawing the utility model is further described.

A kind of isolated plant of hot-rolling mill bag-type dust comprises hot-rolling mill inlet fume trap cover 1, hot-rolling mill top fume trap cover 2, hot-rolling mill outlet fume trap cover 3, winding arbor extraction press fume trap cover 4, sandblast fume trap cover 5, sack cleaner 6, air-introduced machine 7, aiutage 8 in the utility model, it is characterized in that: by pipeline be linked in sequence hot-rolling mill inlet fume trap cover 1, hot-rolling mill top fume trap cover 2, hot-rolling mill outlet fume trap cover 3, winding arbor extraction press fume trap cover 4, sandblast fume trap cover 5, sack cleaner 6, air-introduced machine 7, aiutage 8.Be provided with dacron ultrafine fiber Nomex cloth bag in the described sack cleaner 6.

Dacron ultrafine fiber Nomex cloth bag, its material is the polymer polyester compound, monfil diameter＜0.01dtex, through PTFE surface-treated Nomex cloth bag, the waterproof and oilproof performance reaches 5 grades, generally can bear the long-term work temperature about 130 ℃, high energy bears 150 ℃ high temperature, and can bear washing away of dust-laden saturated vapor, therefore can direct purification hot-rolling mill flue gas, and need not do any preliminary treatment.Dust concentration after the purification is less than 10mg/Nm ³, and filtration velocity is higher, generally between 2～3m/min.

Because sintered plate filter core internal voids diameter is 40～80mm, therefore when handling high dust-laden saturated vapor, easily produce and stop up, produce in the winter time especially serious freeze, freeze injury, service life is short; The limiting temperature that the sintered plate filter core can bear＜70 ℃ generally require long-term work temperature＜60 ℃; And especially can not bear the higher bulky grain thing of internal temperature in the high-temperature flue gas; Therefore when handling high-temperature flue gas purification, must earlier flue gas be carried out preliminary treatment, generally include the cooling of bulky grain sedimentation and flue gas, equipment is many, long flow path, and energy consumption is big; The sintered plate filter core is formed through casting mold, sintering by the macromolecular compound powder, processed complex, and the production difficulty is big, cost an arm and a leg, thereby the equipment investment expense is 10 times of sack cleaner; Sintered plate filter core gas permeability is poor, the resistance height, and energy consumption is big; Because sintered plate filter core self character, the dust concentration after the purification is substantially at 40～50mg/Nm ³(existing GB is 50mg/Nm ³).And filtration velocity is low, generally between 0.6～0.8m/min.

The course of work of the present utility model is: to produce ￠ 140mm petroleum steel pipe hot-rolling mill dust collecting process is example, as flow 30 * 104Nm ³/ h, 120 ℃ of temperature, dust content 8g/Nm ³High dust-laden saturated vapor, capture through hot-rolling mill inlet fume trap cover 1, hot-rolling mill top fume trap cover 2, hot-rolling mill outlet fume trap cover 3, winding arbor extraction press fume trap cover 4, sandblast fume trap cover 5, be transported to sack cleaner 6 through piping, dust content is less than 10mg/Nm after sack cleaner 6 purifies ³,, guided by air-introduced machine 7 through pipeline, enter atmosphere by aiutage 8.The sintered plate dust pelletizing system needs air-introduced machine power 1000KW approximately, and present air-introduced machine power 500KW.

To produce ￠ 140mm petroleum steel pipe hot-rolling mill dust collecting process is example, and the utility model device and sintered plate dust arrester relatively are described as follows:

Annotate: work per year and calculated in 330th.

This shows that the utility model smoke dust discharge concentration is low, plant investment is low, operation energy consumption is low, good purification.

Claims

1. the isolated plant of a hot-rolling mill bag-type dust, comprise hot-rolling mill inlet fume trap cover, hot-rolling mill top fume trap cover, hot-rolling mill outlet fume trap cover, winding arbor extraction press fume trap cover, sandblast fume trap cover, sack cleaner, air-introduced machine, aiutage, it is characterized in that: by pipeline be linked in sequence hot-rolling mill inlet fume trap cover, hot-rolling mill top fume trap cover, hot-rolling mill outlet fume trap cover, winding arbor extraction press fume trap cover, sandblast fume trap cover, sack cleaner, air-introduced machine, aiutage.

2. the isolated plant of a kind of hot-rolling mill bag-type dust according to claim 1 is characterized in that: be provided with dacron ultrafine fiber Nomex cloth bag in the described sack cleaner.