CN102794068A

CN102794068A - Air sealed apparatus used for sealing pipeline valve of sack-duster

Info

Publication number: CN102794068A
Application number: CN2012102779923A
Authority: CN
Inventors: 陈喜明
Original assignee: Wuxi Xuelang Environmental Technology Co Ltd
Current assignee: Wuxi Xuelang Environmental Technology Co Ltd
Priority date: 2012-08-07
Filing date: 2012-08-07
Publication date: 2012-11-28

Abstract

The invention provides an air sealed apparatus used for sealing pipeline valves of sack-dusters, which enables the pressures of a bypass pipeline and a preheating circulation pipeline higher than the pressure of the inlet of a duster, and makes dust-laden flue gas unable to enter the inlet of the duster through the two pipelines, so the dust-laden flue gas won't flow into the clean flue gas of the duster outlet, thus ensuring tail gas reaches the standard to discharge. The device comprises a sack-duster, a preheating circulation pipeline, and a bypass pipeline, wherein the entryway of dust-laden flue gas is fed into the inlet of the sack-duster, the outlet of the sack-duster is fed into a tail gas discharging flue, and the preheating circulation pipeline is in connection with the entryway of dust-laden flue gas and the tail gas discharging flue respectively. The device is characterized in that the preheating circulation pipeline and the bypass pipeline are communicated at one side of the entryway of dust-laden flue gas through an air pipeline.

Description

The air obturator that is used for the sealing of sack cleaner pipe valve

Technical field

The present invention relates to the technical field of sack cleaner structure in the processing of garbage incinerating tail gas, be specially the air obturator that is used for the sealing of sack cleaner pipe valve.

Background technology

Sack cleaner is one of capital equipment in the garbage incinerating tail gas purified treatment, is mainly used in the dust that separates in the tail gas, and tail gas dust emission after treatment is up to state standards.And be used for the sack cleaner of garbage incinerating tail gas purified treatment because treatment process and system requirements are imported and exported bypass line and the warm-up cycle pipeline that needs setting to be connected at deduster.This two circuits all directly is communicated with deduster to be imported and exported, and pipeline two is equipped with valve and cuts off pipeline.But because the valve that the deduster outlet pressure is lower than on deduster inlet pressure and the pipeline can not accomplish to seal fully (being zero leakage); Therefore cause having the ash-laden gas of handling without deduster directly to get into the clean flue gas of deduster outlet, thereby exhaust emissions is exceeded standard through this two circuits.And along with the lengthening of running time, valve sealing face can produce laying dust, and slip also can strengthen, and exhaust emissions exceeds standard more easily.

Summary of the invention

To the problems referred to above; The invention provides the air obturator that is used for the sealing of sack cleaner pipe valve; It can make bypass line and warm-up cycle pipeline inner pressure be higher than the deduster inlet pressure; Make ash-laden gas not get into the deduster import and then can not flow into the clean flue gas that deduster exports, thereby guarantee that exhaust emissions is up to standard through this two circuits.

The air obturator that is used for the sealing of sack cleaner pipe valve; Its technical scheme is such: it comprises sack cleaner, warm-up cycle pipeline, bypass line; The ash-laden gas access road feeds the inlet of said sack cleaner; The outlet of said sack cleaner feeds tail gas and discharges flue; Said warm-up cycle pipeline is communicated with said ash-laden gas access road, tail gas respectively and discharges flue, and said bypass line is communicated with said ash-laden gas access road respectively, tail gas is discharged flue, it is characterized in that: both are connected said warm-up cycle pipeline, bypass line in ash-laden gas access road one side through air pipe line; Through being communicated with said air pipe line behind centrifugal blower, the air heater, the position that said air pipe line leads to warm-up cycle pipeline, bypass line is respectively arranged with pipe valve to surrounding air in order.

After adopting structure of the present invention; The centrifugal blower import sucks surrounding air; The centrifugal blower outlet connects said air heater; After the heating of surrounding air heater via, get into bypass line and warm-up cycle pipeline, switch when the configuration valve is used for the device start and stop on the air pipe line through air pipe line; Centrifugal blower is that the surrounding air that charges into bypass line and warm-up cycle pipeline provides the pressure that is higher than the deduster import; So it can make bypass line and warm-up cycle pipeline inner pressure be higher than the deduster inlet pressure, make ash-laden gas not get into the deduster import and then can not flow into the clean flue gas that deduster exports, thereby guarantee that exhaust emissions is up to standard through this two circuits; And air heater makes ambient air temperature be higher than the dew point flue-gas temperature and prevents the flue gas condensing dewfall, and the equipment that makes is difficult for being corroded, and has increased service life.

Description of drawings

Fig. 1 is a front view structural representation of the present invention.

The specific embodiment

See Fig. 1; It comprises sack cleaner 1, warm-up cycle pipeline 2, bypass line 3; Ash-laden gas access road 4 feeds the inlet of sack cleaner 1; The outlet of sack cleaner 1 feeds tail gas and discharges flue 5; Warm-up cycle pipeline 2 is communicated with ash-laden gas access road 4, tail gas respectively and discharges flue 5, and bypass line 3 is communicated with ash-laden gas access road 4 respectively, tail gas is discharged flue 5, and both are connected warm-up cycle pipeline 2, bypass line 3 in ash-laden gas access road 4 one sides through air pipe line 6; Surrounding air is communicated with air pipe line 6 through centrifugal blower 7, air heater 8 backs in order, and the position that air pipe line 6 leads to warm-up cycle pipeline 2, bypass line 3 is respectively arranged with pipe valve 9.

Claims

1. the air obturator that is used for the sealing of sack cleaner pipe valve; It comprises sack cleaner, warm-up cycle pipeline, bypass line; The ash-laden gas access road feeds the inlet of said sack cleaner; The outlet of said sack cleaner feeds tail gas and discharges flue; Said warm-up cycle pipeline is communicated with said ash-laden gas access road, tail gas respectively and discharges flue, and said bypass line is communicated with said ash-laden gas access road respectively, tail gas is discharged flue, it is characterized in that: both are connected said warm-up cycle pipeline, bypass line in ash-laden gas access road one side through air pipe line; Through being communicated with said air pipe line behind centrifugal blower, the air heater, the position that said air pipe line leads to warm-up cycle pipeline, bypass line is respectively arranged with pipe valve to surrounding air in order.