CN2667334Y

CN2667334Y - Refuse incinarator dust remover set

Info

Publication number: CN2667334Y
Application number: CN 200320132008
Authority: CN
Inventors: 薛家华; 胡燕萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-16
Filing date: 2003-12-16
Publication date: 2004-12-29
Anticipated expiration: 2013-12-16

Abstract

The utility model relates to a safe and reliable refuse incinarator dust remover suit with high efficiency and energy saving. The utility model is characterized in that tail gas of the refuse incinerator is connected with a heat pipe exchanger (13) through a three-way reversing valve(1); the three-way reversing valve(1) can be switched to bypass when the system goes wrong and fuel gas undergoes over heat; the heat pipe exchanger (13) is able to reduce temperature of fuel gas, recover waste heat and remove dust primarily in a reliable manner; the front of the heat pipe exchanger (13) is connected with a bag dust remover (15); fuel gas is sent to a chimney through a fan after second dust removal. The utility model solves the technologic problem of refuse incinerator system, that is, filtering material of the bag dust remover is burnt down and goes invalid, is damaged and is suspended to be operated due to failure and overheat.

Description

Incinerator dedusting unit

The utility model relate to a kind of energy safe, energy-efficient, administer the novel dust removing unit that garbage incinerating tail gas pollutes reliably.

In numerous methods that China administers refuse (rubbish), burning method is handled its volume reduction rate maximum, and the most thorough innoxious, outstanding features such as occupation of land is little, the recyclable utilization of heat energy are widely used.Because CIU produces flue-gas temperature up to 1100 ℃, discharge about 550 ℃ flue gas and enter natural air cooled smoke pipe cooler through the pipeline of band refractory lining, cooling enters dust arrester to about 250 ℃, clean gas is arranged to atmosphere through main smoke discharging blower fan and chimney again.Since on June 1st, 2000, clearly stipulate in the waste incineration standard of country's promulgation " dust arrester of incinerator must adopt sack cleaner ".And the glass serviceability temperature of handling through organosilicon in the present homemade and import filtrate is 260 ℃, heat-resisting nylon is 200 ℃, be difficult to satisfy the requirement of system's heatproof, the accident that the filtrate overtemperature that happens occasionally is burnt causes disposable hundreds of square filtrate (200-300 unit/m ²) loss and system stop production, become the difficult point of security of system reliability service.

The purpose of this utility model is to provide a kind of and can moves safely and reliably, the novel dust removing unit that improvement garbage incinerating tail gas that again can be energy-efficient pollutes.Make the CIU discharging meet GWKB2-1999 " dangerous waste incineration pollution control criterion " and GB16293-1996 " discharge standard of air pollutants ".

The technical solution of the utility model is: it comprises three-dimensional reversal valve, bypass flue, the secondary high-temperature flue gas of incinerator is gone into the gas passage from smoke inlet through what the three-dimensional reversal valve entered heat pipe, it is characterized in that going into of described heat exchange of heat pipe is communicated with hot pipe assembly after the gas passage extends forward, described hot pipe assembly is to be provided with countless the two-phase closed type hot siphons that have fin again through the regularly arranged and tube bank group of secure fixation on flat board; The place ahead of described hot pipe assembly is communicated with the inlet house steward of sack cleaner; The inlet house steward of described sack cleaner is communicated with n bag-type dusting unit one by one for (n-1) level terraced structure and by the inlet elbow that guide vane is housed; Described bag-type dusting unit is that numerous filter bag, cage, Venturi tube form through seal combination; The place ahead of described bag-type dusting unit is communicated with the outlet header by the lift valve of compressed air operation; The place ahead of described outlet header is provided with three smoke uptakes and is communicated with centrifugal type draught fan; The outlet of described centrifugal type draught fan is connected to chimney.(seeing accompanying drawing)

The operation principle of the utility model three-dimensional reversal valve: during operate as normal, three-dimensional commutation plate washer is horizontal, and the flue gas about 250 ℃ enters heat exchange of heat pipe through reversal valve; When system's generation overtemperature is in non-normal working; temperature sensor control driving mechanism drives the action of three-dimensional commutation plate washer; make it to be in commutation position; make flue gas process reversal valve by-passing far above 250 ℃; thereby playing protection dedusting unit is not damaged; after the system that treats recovers normally, repeat above commutation, make dedusting unit operate as normal.

The operation principle of the utility model heat exchange of heat pipe: the flue gas during work about 250 ℃ enters heat exchange of heat pipe, contact with hot pipe assembly, dust-contained airflow is impacted on the heat pipe wing plate, airflow direction generation drastic shift, effect of inertia by grit itself, make itself and flow separation, fall in the ash bucket, can trap the above thick grit of 10～20um; Two-phase closed type hot siphon with high thermal conductivity is heat transfer element obtains hot pipe assembly at following smoke-box a heat, be sent to upper shell continuously, upborne water temperature is taken away, the hot water of waste heat recovery supplies domestic water, and keeps operate as normal by water circulating pump by circulating water pool and moisturizing.About 180 ℃ flue gas enters the sack cleaner two-stage dust removal after heat exchange of heat pipe cooling dedusting.

The operation principle of the utility model sack cleaner: about 180 ℃ flue gas enters the inlet house steward of sack cleaner during work, and the inlet elbow through guide vane is arranged is evenly distributed in each dust removing units, dust-contained airflow enters the cylindrical shape filter bag from the bottom, dust is caught to combine on the filtrate when the hole by filtrate, the lift valve of operating via compressed air through the clean air of filtrate enters the outlet header, be deposited on the dust on the filtrate, each dust removing units periodicity and gas barrier are by being sprayed onto the compressed air of each bar filter bag by Venturi nozzle to filter bag ash removal.Dust falls into ash bucket, drains through the ash bucket outlet device.Filtrate can be selected the heat-resisting nylon of 200 ℃ of heatproofs for use.

The utility model compared with prior art has following advantage:

(1) import is provided with the three-dimensional reversal valve, and system is hindered when making the flue gas overtemperature for some reason, switches to bypass reliably, has protected the dedusting unit not to be damaged.

(2) thermal siphon of heat exchange of heat pipe not only has good heat-conducting, and has working stability, and starting performance is good, can transmit the advantage of big heat energy under the less temperature difference.Can make below the flue gas cool-down to 180 ℃, again can residual heat recovery and system is carried out primary dust removing as mechanical dust collector.

(3) be lower than 180 ℃ flue gas and enter the heat resistance requirement that sack cleaner had both satisfied the sack cleaner filtrate, the cost of filtrate is minimized, obtain the service life of filtrate prolonging, reduced fast driving requirement simultaneously the three-dimensional reversal valve.

Below in conjunction with drawings and Examples utility model is further described: accompanying drawing is the main structure figure of the utility model embodiment;

Wherein: [1] three-dimensional reversal valve; [2] lie flue; [3] access road; [4] hot pipe assembly; [5] inlet house steward; [6] bag-type dusting unit; [7] outlet header; [8] centrifugal type draught fan; [9] three-dimensional commutation plate washer; [10] driving mechanism; [11] smoke-box under; [12] upper shell; [13] heat exchange of heat pipe; [14] ash bucket; [15] ash output valve; [16] grey storehouse; [17] ash discharging gear; [18] water inlet; [19] delivery port; [20] water circulating pump; [21] circulatory pool; [22] domestic water pipeline; [23] moisturizing pipeline; [24] sack cleaner.

Embodiment: referring to accompanying drawing, the utility model comprises three-dimensional reversal valve [1], bypass flue [2], the secondary high-temperature flue gas of incinerator is gone into gas passage [3] from smoke inlet through what three-dimensional reversal valve [1] entered heat pipe [13], it is characterized in that going into of described heat exchange of heat pipe [13] is communicated with hot pipe assembly [4] after gas passage [3] extends forward, described hot pipe assembly is to be provided with countless the two-phase closed type hot siphons that have fin again through the regularly arranged and tube bank group of secure fixation on flat board; Present embodiment is 500, also can be more, and purpose is to make dedusting and cooling-down effect be controlled at the scope of system requirements, can not make resistance bigger simultaneously.The place ahead of described hot pipe assembly [4] is communicated with the inlet house steward [5] of sack cleaner [15]; The inlet house steward [5] of described sack cleaner [15] is communicated with n bag-type dusting unit [6] one by one for (n-1) level terraced structure and by the inlet elbow that guide vane is housed; Present embodiment n is taken as 4,6,8,10,12 respectively by the different disposal air quantity.Described bag-type dusting unit [6] is that numerous filter bag, cage, Venturi tube form through seal combination; The place ahead of described bag-type dusting unit [6] is communicated with outlet header [7] by the lift valve of compressed air operation; The place ahead of described outlet header [7] is provided with three smoke uptakes, and the place ahead of described three smoke uptakes is provided with centrifugal type draught fan [8]; The outlet of described centrifugal type draught fan [8] is connected to chimney.The utility model also can use under the occasion of other dedusting of need lowering the temperature.

Claims

1. incinerator dedusting unit, comprise three-dimensional reversal valve [1], bypass flue [2], the secondary high-temperature flue gas of incinerator is gone into gas passage [3] from smoke inlet through what three-dimensional reversal valve [1] entered heat pipe [13], it is characterized in that going into of described heat exchange of heat pipe [13] is communicated with hot pipe assembly [4] after gas passage [3] extends forward, described hot pipe assembly is to be provided with countless the two-phase closed type hot siphons that have fin again through the regularly arranged and tube bank group of secure fixation on flat board; The place ahead of described hot pipe assembly [4] is communicated with the inlet house steward [5] of sack cleaner [24]; The inlet house steward [5] of described sack cleaner [24] is communicated with n bag-type dusting unit [6] one by one for (n-1) level terraced structure and by the inlet elbow that guide vane is housed; Described bag-type dusting unit [6] is that numerous filter bag, cage, Venturi tube form through seal combination; The place ahead of described bag-type dusting unit [6] is communicated with outlet header [7] by the lift valve of compressed air operation; The place ahead of described outlet header [7] is provided with three smoke uptakes and is communicated with centrifugal type draught fan [8]; The outlet of described centrifugal type draught fan [8] is connected to chimney.

2. according to the described incinerator dedusting of claim 1 unit, it is characterized in that: described three-dimensional reversal valve [1] is made up of three-dimensional reversible deflector [9], driving mechanism [10].

3. incinerator dedusting unit according to claim 1 is characterized in that: described heat exchange of heat pipe [13] is made up of upper shell [12], following smoke-box [11] and hot pipe assembly [4]; Described upper shell [12] is provided with water inlet [18], delivery port [19]; Described water inlet [18] is communicated with water circulating pump [20]; Described delivery port [19] is communicated with circulatory pool [21] and domestic water pipeline [22]; Described circulatory pool [21] is provided with condensate make-up piping [23]; The following smoke-box [17] of described heat exchange of heat pipe [13] is provided with ash bucket [14] and ash output valve [15].

4. incinerator dedusting unit according to claim 1 is characterized in that: described sack cleaner [24] is provided with: inlet house steward [5], outlet header [7], dust removing units [6], grey storehouse [16], ash discharging gear [17].