CN1603687A - Incinerated tail gas purifying method and purifying equipment based on dry type cloth bag reactor - Google Patents
Incinerated tail gas purifying method and purifying equipment based on dry type cloth bag reactor Download PDFInfo
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- CN1603687A CN1603687A CN 200410086709 CN200410086709A CN1603687A CN 1603687 A CN1603687 A CN 1603687A CN 200410086709 CN200410086709 CN 200410086709 CN 200410086709 A CN200410086709 A CN 200410086709A CN 1603687 A CN1603687 A CN 1603687A
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- sack cleaner
- purification
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- flue gas
- cloth sack
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Abstract
The invention belongs to the solid waste to burn down the processing area of technology, involves burns down the exhaust purification method and its the purification equipment based on the doing -like cloth sack reactor. The method is: Waits the purification the high temperature haze the temperature to reduce through anxious Leng Taba to 200deg.C below, again with the powder body absorbent intensive mixing, is the acidic gas by the center and, the heavy metal and two wicked English kind of pollutant are adsorbed;The product is intercepted by the cloth sack dust remover and filters, after the purification exhaust discharges from the cloth sack dust remover. The installment including high temperature smoke short of breath cold tower, dusting installment, absorption column and cloth sack dust removal system four parts: The partial connections relations are: High temperature smoke short of breath Leng Ta exit pipe with absorption column base connected, in which should the exit pipe lower part horizontal length of pipe and the dusting installment vertical output pipeline connection, absorption column the exit pipe and the cloth sack dust remover import is connected. The invention may while effectively carries on to the highly concentrated acidic gas and, but also effectively enhances the cloth sack dust remover the service life and the purification efficiency.
Description
Technical field
The invention belongs to the solid waste burning processing technology field, particularly be applicable to a kind of purification techniques that contains volatile heavy metal pollutant (comprising Hg, Cd, Pb etc.) and extremely toxic substance dioxin pollution thing in the incinerator discharging flue gases such as house refuse, medical waste and industrial solid wastes.
Background technology
Along with quickening of urbanization process and constant development of economy, house refuse, medical waste and industrial solid wastes (rubbish is called for short in the back) generation increases day by day, brings very big pressure to ecological environment.Burning method is owing to have advantages such as minimizing, innoxious and energy recovery and be used widely gradually.Yet waste incineration produces secondary pollution problem and can not be ignored.The secondary pollution that waste incineration produces mainly concentrates on sour gas HCl, heavy metal and dioxin pollution thing.Sour gas generally adopts the method for wet method, semidry method to remove, because gas liquid reaction speed is fast, removal effect is good, and the acid-base neutralization reaction can guarantee that the concentration of emission of sour gas is reduced to limit value.Wet method can only be transferred to the dissolubility heavy metal in the waste liquid and go, also need deal carefully with, on the other hand, and dioxin pollution thing water-soluble very low, wet method is little to its removal effect.And semidry method pulping system complexity, conveying circuit is out of order easily, if spray effect is not good, the sack cleaner filter cloth is subjected to wet waste gas and reduces service life, therefore to the removal existence and the similar defective of wet method of heavy metal and dioxin pollution thing.
Facts have proved that in the waste incineration process, volatilization heavy metal (comprising Hg, Cd, Pb etc.) of attitude and dioxin pollution thing etc. are enriched on the submicron particles such as flying dust easily, can remove effectively by dry method.In theory, solid absorbents such as active carbon are sprayed into after the flue, submicron particles will form coarse granule by effects such as physical absorption and chemical reactions, enters sack cleaner again and is effectively caught.But the price comparison costliness of active carbon, processing cost is higher.People attempt to utilize low-cost sorbents such as lime, kaolin, dolomite, calcite to substitute experiment, found that, because the time of contact of solid and gas is limited and mass transfer effect is not good, palpus excess dosing often, the consumption of medicament is big, and whole removal efficient is also lower.
Summary of the invention
The objective of the invention is for overcoming the existing low shortcoming of dry process effect, Gu it is limited and mass transfer effect is not good to solve time of contact between solid-particle, can't give full play to the adsorbing problem of adsorbent, a kind of incineration tail gas purification method and purifier based on dry type cloth bag reactor is provided, had that investment cost is low, treatment effeciency is high, an advantage such as simple to operate, convenient management.
A kind of incineration tail gas purification method based on dry type cloth bag reactor that the present invention proposes may further comprise the steps:
1) high-temperature flue gas to be clean is reduced to temperature below 200 ℃ by quench tower, to avoid the synthetic again of dioxin pollution thing;
2) flue gas and the powder adsorbent after will lowering the temperature is fully mixed, and sour gas wherein is neutralized, and heavy metal and dioxin pollution thing are adsorbed;
3) product that is adsorbed is tackled and is filtered by sack cleaner, and the tail gas after the purification is discharged from sack cleaner.
The present invention realizes that above-mentioned purification method has designed a kind of incineration tail gas purifier based on dry type cloth bag reactor, it is characterized in that, comprises high-temperature flue gas quench tower, dusting device, adsorption tower and four parts of bag-type dust removal system; The annexation of each several part is: the discharge line of high-temperature flue gas quench tower links to each other with the adsorption tower bottom, and wherein the lower horizontal pipeline section of this discharge line is connected with the vertical output pipeline of dusting device, and the adsorption tower discharge line links to each other with the import of sack cleaner.The tail gas of the outlet of sack cleaner can be discharged by the chimney through linking to each other, and the sack cleaner bottom is provided with the storage ash bucket.
Above-mentioned dusting device is made of storage powder groove and defeated powder blower fan, and this storage powder trench bottom is provided with screw feeder.
Above-mentioned sack cleaner lower part outlet also can not link to each other with air-introduced machine;
Upper inlet, lower part outlet place at sack cleaner also can be separately installed with mass-flow gas meter.
The device of above-mentioned each part of the present invention is conventional products.
Operation principle of the present invention is: high-temperature flue gas is through water spray quench tower (inside is provided with the good shower nozzle of atomizing effect), can fully be cooled to below 200 ℃, the powder transmitter adopts compressed air, adsorbent (as Ca-base adsorbent) in the storage powder groove is sprayed in the adsorption tower, the adsorption tower internal diameter is 3 times of adsorption tower bottom inlet caliber, according to formula
(wherein Q is a gas flow, d is an internal diameter, v is a gas flow rate), when flow one timing, gas flow rate and caliber square are inversely proportional to, therefore velocity of flue gas enters and reduces to original 1/9 after the adsorption tower, it is original 9 times that flue gas increased in the time of staying of adsorption tower, powder granule is able to fully mix with flue gas at short notice, and powder granule is in fluidized state, can carry out quick neutralization reaction with sour gas, with heavy metal and dioxin pollution thing generation suction-operated, sack cleaner is owing to hold back, inertial collision, static, absorbent particles and absorption heavy metal and dioxin pollution thing thereon can be further held back in effects such as diffusion.Mass-flow gas meter can be used for controlling flue gas flow, determines adsorbent consumption and check system air-tightness.The flying dust of sack cleaner interception enters the storage ash bucket through after the impulse hunting, handles.
The present invention also effectively improves the service life and the purification efficiency of sack cleaner when acid gas neutralizes to high concentration effectively, thereby is removed heavy metal and dioxin pollution thing in the incineration flue gas efficiently.Have that investment cost is low, treatment effeciency is high, advantage such as simple to operate, convenient management.
Description of drawings
Fig. 1 is the incineration tail gas cleaning equipment example structure schematic diagram based on dry type cloth bag reactor of the present invention.
The specific embodiment
Incineration tail gas cleaning equipment based on dry type cloth bag reactor of the present invention reaches accompanying drawing in conjunction with the embodiments and is described in detail as follows:
Present embodiment based on the structure of the incineration tail gas cleaning equipment of dry type cloth bag reactor as shown in Figure 1.The dusting device that it comprises high-temperature flue gas quench tower 1, adsorption tower 2, is made of defeated powder blower fan 3 and coupled storage powder groove 4, and 5 four parts of bag-type dust removal system; Wherein, the top outlet of quench tower 1 links to each other with adsorption tower 2 bottom inlet by the discharge line that is provided with flange K1, wherein this discharge line lower horizontal carries pipeline section to be connected with the vertical output pipeline of dusting device, defeated powder blower fan 3 adopts compressed air in the dusting device, storage powder groove 4 bottoms are provided with screw feeder 8, the adsorption tower top exit links to each other with the upper inlet of sack cleaner 5 by the discharge line that is provided with flange K2, sack cleaner 5 outlet at bottoms are provided with storage ash bucket 9, and sack cleaner 5 lower part outlets link to each other with air-introduced machine 6; Upper inlet and lower part outlet place at sack cleaner 5 also are separately installed with mass-flow gas meter 10.
Adopt the purification method of present embodiment to be: high-temperature flue gas is through water spray quench tower 1, utilize the heat of vaporization of atomized water fully to be cooled to below 200 ℃, defeated powder blower fan 3 will store up solid absorbent in the powder groove 4 and spray into horizontal conveying pipe and enter adsorption tower 2, adsorption tower is between quench tower 2 and sack cleaner 5, strengthened contacting of powder adsorbent and flue gas, strengthened the neutralization reaction of powder granule and sour gas and to the adsorption effect of heavy metal and dioxin pollution thing, in addition because the submicron order ash particle adsorbs into coarse granule with the adsorbent collision, be difficult to pass the cloth bag surface, therefore strengthened the separating effect of sack cleaner 5, flue gas is finally discharged through air-introduced machine 6.Mass-flow gas meter 10 can be controlled in order to flue gas flow, determines adsorbent consumption and check system air-tightness.The flying dust of sack cleaner 5 interceptions enters storage ash bucket 9 through after the impulse hunting, handles.
The present invention compares with existing incineration flue gas treatment system, has the following advantages:
(1) between quench tower and sack cleaner, added the adsorption tower that caliber changes from small to big, flue gas flow rate becomes original 1/9, the time of staying is original 9 times, helping flue gas powder granule and sour gas and heavy metal in the adsorption tower uphill process fully collides and adsorbs, have the function of removing multiple pollutant simultaneously, to the clearance of sour gas and heavy metal, dioxin pollution thing all to more than 99.9%.
(2) owing to increase the time of contact between flue gas and the adsorbent, the adsorbent utilization ratio increases, and has significantly reduced actual adsorbent dosage, has reduced processing cost preferably.
(3) because wet waste gas is able to abundant removal in adsorption tower, guaranteed that the dry type cloth bag reactor filter cloth is not subjected to the influence of wet waste gas, increase service life.
Claims (5)
1, a kind of incineration tail gas purification method based on dry type cloth bag reactor may further comprise the steps:
1) high-temperature flue gas to be clean is reduced to temperature below 200 ℃ by water-cooled, to avoid the synthetic again of dioxin pollution thing;
2) flue gas and the powder adsorbent after will lowering the temperature is fully mixed, and sour gas wherein is neutralized, and heavy metal and dioxin pollution thing are adsorbed;
3) product that is adsorbed is tackled and is filtered by sack cleaner, and the tail gas after the purification is discharged from sack cleaner.
2, a kind of incineration tail gas purifier based on dry type cloth bag reactor is characterized in that, comprises high-temperature flue gas quench tower, dusting device, adsorption tower and four parts of bag-type dust removal system; The annexation of each several part is: the discharge line of high-temperature flue gas quench tower links to each other with the adsorption tower bottom, and wherein the lower horizontal pipeline section of this discharge line is connected with the vertical output pipeline of dusting device, and the adsorption tower discharge line links to each other with the import of sack cleaner.
3, purifier as claimed in claim 1 is characterized in that, described dusting device is made of storage powder groove and defeated powder blower fan, and this storage powder trench bottom is provided with screw feeder.
4, purifier as claimed in claim 1 is characterized in that, described sack cleaner lower part outlet links to each other with air-introduced machine.
5, purifier as claimed in claim 1 is characterized in that, the upper inlet of described sack cleaner, lower part outlet place are equipped with mass-flow gas meter respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410086709 CN1283952C (en) | 2004-10-29 | 2004-10-29 | Incinerated tail gas purifying method and purifying equipment based on dry type cloth bag reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410086709 CN1283952C (en) | 2004-10-29 | 2004-10-29 | Incinerated tail gas purifying method and purifying equipment based on dry type cloth bag reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603687A true CN1603687A (en) | 2005-04-06 |
| CN1283952C CN1283952C (en) | 2006-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410086709 Expired - Fee Related CN1283952C (en) | 2004-10-29 | 2004-10-29 | Incinerated tail gas purifying method and purifying equipment based on dry type cloth bag reactor |
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| Country | Link |
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| CN (1) | CN1283952C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157338A (en) * | 2012-12-19 | 2013-06-19 | 威海航泰环保设备有限公司 | Cremation machine all-dry-method posttreatment system |
| CN101573172B (en) * | 2006-12-28 | 2013-08-21 | 伊蒂股份有限公司 | Process for the purification of combustion fumes |
| CN108043194A (en) * | 2016-01-11 | 2018-05-18 | 张文国 | A kind of industrial refuse cracking incineration tail gas denitrating system |
| CN109821353A (en) * | 2019-04-04 | 2019-05-31 | 安徽海螺川崎工程有限公司 | A kind of solid waste main shop deodoration system |
| CN110906751A (en) * | 2019-12-05 | 2020-03-24 | 中冶华天南京工程技术有限公司 | Electric furnace flue gas quenching device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126519B (en) * | 2015-08-29 | 2017-12-01 | 华南理工大学 | A kind of wiring board disassembles the processing system of smog organic exhaust gas |
-
2004
- 2004-10-29 CN CN 200410086709 patent/CN1283952C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573172B (en) * | 2006-12-28 | 2013-08-21 | 伊蒂股份有限公司 | Process for the purification of combustion fumes |
| CN103157338A (en) * | 2012-12-19 | 2013-06-19 | 威海航泰环保设备有限公司 | Cremation machine all-dry-method posttreatment system |
| CN103157338B (en) * | 2012-12-19 | 2015-09-09 | 威海航泰环保设备有限公司 | Cremation machine all-dry-method posttreatment system |
| CN108043194A (en) * | 2016-01-11 | 2018-05-18 | 张文国 | A kind of industrial refuse cracking incineration tail gas denitrating system |
| CN108043194B (en) * | 2016-01-11 | 2019-12-03 | 安徽金森源环保工程有限公司 | A kind of industrial refuse cracking incineration tail gas denitrating system |
| CN109821353A (en) * | 2019-04-04 | 2019-05-31 | 安徽海螺川崎工程有限公司 | A kind of solid waste main shop deodoration system |
| CN110906751A (en) * | 2019-12-05 | 2020-03-24 | 中冶华天南京工程技术有限公司 | Electric furnace flue gas quenching device |
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| Publication number | Publication date |
|---|---|
| CN1283952C (en) | 2006-11-08 |
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Granted publication date: 20061108 Termination date: 20121029 |