CN101322893A

CN101322893A - Smoke cyclic screening and dedusting method and apparatus

Info

Publication number: CN101322893A
Application number: CNA200810051030XA
Authority: CN
Inventors: 苏中
Original assignee: Individual
Current assignee: Su zhong
Priority date: 2008-07-30
Filing date: 2008-07-30
Publication date: 2008-12-17

Abstract

The invention discloses a circular soot filtering and removing method as well as a device thereof. A filter mechanism is a rotary disc structure which can rotate and a filter screen net is embedded on the rotary disc; the filter mechanism is arranged on the cross section of a soot emission channel and an airflow recoil channel of a soot removing device; the flow direction of the recoil airflow is opposite to the exhausted soot; the soot is filtered and absorbed in the soot emission channel; when the rotary disc rotates from the position where the soot can be absorbed to the position of the airflow recoil channel, the recoil airflow can clean the position where the rotary disc can absorb the soot. At the moment, the position cleaned by the rotary disc rotates to the soot emission channel to filter and absorb the soot; the process can be repeated and the cleaning of the position where the rotary disc can filter and absorb the soot can be automatically completed during the continuous rotating process. The circular soot filtering and removing method and the device can effectively clean and remove the soot in the warm gas with high temperature under the condition of high temperature and can automatically complete the cleaning of a filtering and rotary device at the same time.

Description

A kind of smoke cyclic screening and dedusting method and device

Technical field

The present invention discloses a kind of smoke cyclic screening and dedusting method, and a kind of dust removal by filtration device that is applicable to this method also is provided simultaneously, belongs to the device technique field of dust removal and purification.

Background technology

At present, along with the development of industrial technology, all have every year in the tens billion of tons of industrial high temperature gas discharging atmosphere, these industrial high temperature gases are to be that fuel produces in combustion process with coal or heavy oil mostly, generally greater than 400 ℃, the dust concentration height, soot dust granule is thin, stickums such as tar are many, the easy dewfall of low temperature contains a large amount of grits and pernicious gas, directly discharging, serious atmosphere pollution can be caused on the one hand, a large amount of thermal waste can be caused on the other hand.

Existing industrial dedusting method comprises following several method substantially: cloth-bag type process of cleaning, high temperature cyclone dust removal method, Cottrell process and wet dust removal method etc., wherein, cloth-bag type process of cleaning maximum operating temperature is 280 ℃, has heatproof and acidproofization etching problem; High temperature cyclone dust removal method is because low to the removal of the foreign particle below 10 μ m efficient, even adopt multistage dedusting, its removal effect does not reach 98% yet; And Cottrell process not only consumes energy greatly, and dust removing effects is also very unstable.Adopt the wet dust removal method of cascade, not only can cause the waste of heat energy, can cause the secondary pollution of water simultaneously again.In a word, existing dust collection method is difficult to satisfy the industrial high temperature dedusting and purifies requirement.

Summary of the invention

The present invention discloses a kind of smoke cyclic screening and dedusting method, has solved the dust removal problem of elevated temperature heat gas.

The present invention also provides a kind of dust removal by filtration system that is applicable to this method, can remove effectively flue dust in the elevated temperature heat gas under the hot conditions, also can finish the automatic cleaning of filtering rotary device simultaneously automatically.

Technical solution of the present invention is as follows: filter mechanism is a rotatable turntable structure, be inlaid with filter screen on the rotating disk, filter mechanism is arranged on the cross section of the soot emissions passage of dust arrester and air-flow recoil passage, the recoil air-flow flows to opposite with the discharging flue dust, flue dust is filtered absorption on the soot emissions channel position of rotating disk, when the rotating disk of absorption flue dust position forwards air-flow recoil channel position to, the recoil air-flow cleans the position of rotating disk absorption flue dust, at this moment, position after rotating disk cleans rotates to the soot emissions passage and filters the absorption flue dust, go round and begin again, constantly finish the cleaning of filtering rotating disk absorption flue dust position automatically in the rotary course.

Concrete apparatus structure of the present invention is as follows: the dust removal by filtration device body comprises filter mechanism, drive motors, soot emissions passage and air-flow recoil passage, it is characterized in that: filter mechanism is made of sieves garden dish and the sieves inlayed on it, the middle part of sieves disk is that rotating shaft is coupling in the connection housing of sealing, and be connected with drive motors, drive its rotation, the connection housing is arranged on the cross section of soot emissions passage and air-flow recoil passage, constitutes the opposite passage of the flow direction of recoil air-flow and discharging flue dust on filter mechanism.

In apparatus of the present invention, soot emissions passage and air-flow recoil passage are distributed on the card of rotating disk with its axial symmetry.

Good effect of the present invention is: filter mechanism adopts rotatable turntable structure, utilization is provided with the counterblast mutually of soot emissions passage on it and the circulation of air-flow recoil passage, finish the filtration of flue dust and the automatic cleaning of filter mechanism simultaneously, it is not high to have solved general dust pelletizing system heatproof, power consumption is big, causes shortcomings such as secondary pollution.This device has higher heat resistance (more than 600 ℃), higher operating pressure and the filter efficiency of Geng Gao, but aspect extensive uses such as bioenergy manufacturing at home and abroad, chemical metallurgy stove, incinerator, calcium carbide steam stove, heating gas purification are with a wide range of applications.

Description of drawings

Fig. 1,2 is apparatus of the present invention structure principle chart.

Fig. 3 is a filter mechanism structure principle chart of the present invention.

The specific embodiment

As shown in the figure 1, form the dust removal by filtration device body by filter mechanism 4, drive motors 7, soot emissions passage 9 and air-flow recoil passage 8, wherein, filter mechanism 4 constitutes (referring to Fig. 3) by sieves garden dish 3 and the sieves 2 inlayed on it, and be fixed on the frame 5, the middle part of sieves disk 3 is that rotating shaft 6 is coupling in the connection housing 1 of sealing, and be connected with drive motors 7, drive its rotation, connection housing 1 is arranged on the cross section of soot emissions passage 9 and air-flow recoil passage 8, constitutes the opposite passage of the flow direction of recoil air-flow and discharging flue dust on filter mechanism.Soot emissions passage 9 and air-flow recoil passage 8 is distributed in its axial symmetry on the card of sieves disk 3 (referring to Fig. 2), flue gas sucks from the inlet 10 of soot emissions passage 9, sieves 2 through filter mechanism 4 adsorbs dust-filtering, when rotating to air-flow recoil passage 8 positions, dust is washed away by 11 discharges of its floss hole by the recoil air-flow.

Claims

1, a kind of smoke cyclic screening and dedusting method, it is characterized in that: filter mechanism is a rotatable turntable structure, be inlaid with filter screen on the rotating disk, filter mechanism is arranged on the cross section of the soot emissions passage of dust arrester and air-flow recoil passage, the recoil air-flow is opposite with the flow direction of discharging flue dust, rotation along with filter mechanism, the position rotating exchange of its soot emissions passage and air-flow recoil passage, flue dust is filtered absorption on the discharge-channel position of rotating disk, when forwarding air-flow recoil channel position to, by the recoil gasflow clean-up, make filter mechanism constantly finish the cleaning of filtering rotating disk absorption flue dust position automatically in the rotary course.

2, the dust removal by filtration device made of the described method of claim 1, the dust removal by filtration device body comprises filter mechanism, drive motors, soot emissions passage and air-flow recoil passage, it is characterized in that: filter mechanism is made of sieves garden dish and the sieves inlayed on it, the middle part of sieves disk is that rotating shaft is coupling in the connection housing of sealing, and be connected with drive motors, drive its rotation, the connection housing is arranged on the cross section of soot emissions passage and air-flow recoil passage, constitutes the opposite passage of the flow direction of recoil air-flow and discharging flue dust on filter mechanism.

3, the described dust removal by filtration device of claim 2 is characterized in that: soot emissions passage and air-flow recoil passage are distributed on the card of sieves disk with its axial symmetry.