CN110645583A - Ultra-clean emission treatment system and method for hazardous waste incineration flue gas - Google Patents
Ultra-clean emission treatment system and method for hazardous waste incineration flue gas Download PDFInfo
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- CN110645583A CN110645583A CN201911074434.5A CN201911074434A CN110645583A CN 110645583 A CN110645583 A CN 110645583A CN 201911074434 A CN201911074434 A CN 201911074434A CN 110645583 A CN110645583 A CN 110645583A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000003546 flue gas Substances 0.000 title claims abstract description 105
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 28
- 238000004056 waste incineration Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002253 acid Substances 0.000 claims abstract description 23
- 239000002918 waste heat Substances 0.000 claims abstract description 19
- 238000010791 quenching Methods 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 12
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000746 purification Methods 0.000 claims abstract description 8
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 7
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 19
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 12
- 239000004202 carbamide Substances 0.000 claims description 12
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 238000006722 reduction reaction Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 238000011001 backwashing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 12
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000005554 pickling Methods 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a hazardous waste incineration flue gas ultra-clean emission treatment system and a method, belonging to the technical field of flue gas treatment, and comprising a waste heat boiler, a quench tower, an active carbon storage and conveying device, a dry deacidification tower, a first bag type dust collector, an acid cleaning tower, a neutralization reaction tower, a second bag type dust collector and an SCR catalyst tower which are sequentially connected in series, wherein a heating medium inlet of the waste heat boiler is used as an inlet of hazardous waste incineration flue gas, an outlet end of the SCR catalyst tower is connected with a chimney, a denitrification device is arranged in a first return stroke of the waste heat boiler, the concentration of NOx components in the flue gas is reduced by adopting a non-catalytic reduction method, a flue gas heat exchanger is also arranged between the neutralization reaction tower and the second bag type dust collector, and a Venturi accelerating tube is arranged at an inlet of the dry deacidification tower, so that the system can achieve higher flue gas purification efficiency and effectively purify components such as particulate matters, acidity, dioxin, heavy metals and the like, ensuring the discharge standard superior to the state, low investment and operation cost and simple process.
Description
Technical Field
The invention belongs to the technical field of flue gas treatment, and particularly relates to an ultra-clean emission treatment system and method for hazardous waste incineration flue gas.
Background
The "hazardous waste incineration pollution control standard" (GB18484-2001) is the current hazardous waste incineration pollution control standard, and the control indexes of the hazardous waste incineration pollution control standard on main atmospheric pollutants comprise: the emission concentration of the smoke dust is controlled to be 65mg/m3(ii) a NOx emission concentration 100mg/m3；SO2Emission concentration of 50mg/m3(ii) a Under the standard requirement, the general flue gas purification process of 'a quenching tower, a bag-type dust remover and two-stage wet washing' can basically realize the standard requirement.
At present, the situation of air pollution in China is severe, and the regional air environment problem taking inhalable particles (PM10) and fine particles (PM2.5) as characteristic pollutants is increasingly prominent, so that the health of people is damaged, and the social harmony and stability are influenced. With the deep promotion of industrialization and urbanization of China, the energy resource consumption is continuously increased, and the atmospheric pollution prevention pressure is continuously increased. In areas such as Jingjin Ji, Long triangular, bead triangular and the like, the construction and the transformation of pollution treatment facilities of coal-fired power plants, coal-fired boilers and industrial kilns are basically completed before 2015, and the comprehensive treatment of organic waste gas of petrochemical enterprises is completed. Based on the reasons, more strict atmospheric pollutant emission control standards and main atmospheric pollutant control indexes required by local standards are developed in various relevant provinces and cities: the discharge concentration of smoke dust is controlled at 10mg/m3(ii) a NOx emission concentration 500mg/m3；SO2Emission concentration of 200mg/m3(ii) a The emission concentration of dioxin pollutants can be controlled to be 0.5ng/Nm3The following. Under such conditions, the conventional hazardous waste treatment process system is not compatible, and the requirements of the pollution control emission standard can not be met at all, so that the improvement and the improvement of the flue gas purification process system are required.
Disclosure of Invention
Aiming at various defects in the prior art, in order to solve the problems, a system and a method for treating the ultra-clean emission of the incineration flue gas of the hazardous waste are provided.
In order to achieve the purpose, the invention provides the following technical scheme:
a hazardous waste incineration flue gas ultra-clean emission treatment system comprises a waste heat boiler, a quenching tower, an active carbon storage and conveying device, a dry type deacidification tower, a first bag type dust collector, an acid washing tower, a neutralization reaction tower, a second bag type dust collector and an SCR catalyst tower which are sequentially connected in series, wherein a heat medium inlet of the waste heat boiler is used as an inlet of hazardous waste incineration flue gas, and an outlet end of the SCR catalyst tower is connected with a chimney;
the waste heat boiler is characterized in that a denitrification device is arranged in the first return stroke of the waste heat boiler, the concentration of NOx components in the flue gas is reduced by adopting a non-catalytic reduction method, a flue gas heat exchanger is further arranged between the neutralization reaction tower and the second bag type dust removal tower, and a Venturi accelerating tube is arranged at the inlet of the dry type deacidification tower.
Further, denitrification facility includes urea water tank, urea water pump and injection water pump, hold the urea solution in the urea water tank, urea water pump's entry end and urea water tank intercommunication, its exit end and injection water pump intercommunication, injection water pump's exit end is connected with the nozzle.
Further, the nozzle is made of a high temperature resistant material.
Further, the first bag type dust collector and the second bag type dust collector are both long-bag low-pressure pulse bag type dust collectors.
Furthermore, a precooler is arranged at the inlet end of the pickling tower, and the flue gas enters the pickling tower through the precooler.
Further, active carbon storage conveyor is including storing storehouse and Variable Frequency Speed Governing (VFSG) quantitative feeder, and the storehouse is used for holding the active carbon, Variable Frequency Speed Governing (VFSG) quantitative feeder with store the storehouse intercommunication for carry the active carbon to the flue of intercommunication quench tower, dry-type deacidification tower in.
Further, the outlet end of the SCR catalyst tower is provided with an induced draft fan.
Further, a sampling hole is formed in the chimney and used for installing the smoke online detection device.
In addition, the invention also provides a method adopting the hazardous waste incineration flue gas ultra-clean emission treatment system, which comprises the following steps:
s1: the flue gas enters a waste heat boiler and is mixed with urea solution in a denitrification device, and NOx components in the flue gas are in O2In the presence of urea solution to perform a reduction reaction;
s2: the temperature of the flue gas is reduced to 500 ℃ through a waste heat boiler, the flue gas enters a quench tower from the upper part through a flue, a spray gun is arranged in the quench tower, water drops atomized by the spray gun exchange heat with the flue gas, the temperature of the flue gas is reduced to below 200 ℃, and the residence time of the flue gas in the quench tower is less than 1 s;
s3: the baking soda enters a dry-type deacidification tower through a Venturi accelerating tube and chemically reacts with acidic components in the flue gas;
s4: continuously adding activated carbon, introducing the flue gas into a first bag type dust collector to filter dust and particles contained in the flue gas, mixing the activated carbon with the flue gas, and improving the adsorption and purification of heavy metals and dioxin in the flue gas;
s5: the flue gas enters an acid washing tower through a first bag type dust collector, a precooler is arranged at the inlet end of the acid washing tower, the cooled flue gas is subjected to acid washing, the flue gas after acid washing enters a neutralization reaction tower, and the flue gas and alkali liquor are subjected to backwashing so as to remove acid components in the flue gas;
s6: the flue gas enters the second bag type dust collector and the SCR catalyst tower through the flue gas heat exchanger, and is finally discharged through a chimney.
The invention has the beneficial effects that:
the method not only can achieve higher flue gas purification efficiency, but also can effectively purify particulate matters, acidity, dioxin, heavy metals and other components, ensures the emission standard superior to the state, and has low investment and operation cost and simple flow.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the drawings: 1-a waste heat boiler, 2-a quench tower, 3-a dry deacidification tower, 4-a first bag type dust collector, 5-an acid cleaning tower, 6-a neutralization reaction tower, 7-a second bag type dust collector, 8-an SCR catalyst tower, 9-an active carbon storage and conveying device and 10-a flue gas heat exchanger.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description is given for clear and complete description of the technical solution of the present invention with reference to the accompanying drawings, and other similar embodiments obtained by those skilled in the art without any inventive work based on the embodiments in the present application shall fall within the scope of protection of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. mentioned in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for the purpose of illustration and not for the purpose of limiting the present invention.
The first embodiment is as follows:
as shown in fig. 1, a hazardous waste burns ultra-clean emission processing system of flue gas, includes exhaust-heat boiler 1, quench tower 2, active carbon storage conveyor 9, dry deacidification tower 3, first bag collector 4, pickling tower 5, neutralization reaction tower 6, second bag collector 7 and SCR catalyst tower 8 that concatenate in proper order, the inlet of heat medium of exhaust-heat boiler 1 is as the import of hazardous waste burns the flue gas, and the exit end of SCR catalyst tower 8 is connected the chimney. Meanwhile, an induced draft fan is arranged at the outlet end of the SCR catalyst tower 8 so as to maintain the negative pressure state of the whole treatment system. And the chimney is provided with a sampling hole for installing a smoke online detection device and monitoring the quality of the discharged smoke.
A denitrification device is arranged in the first return of the waste heat boiler 1, and the concentration of NOx components in the flue gas is reduced by adopting a non-catalytic reduction method. Specifically, denitrification facility includes urea water tank, urea water pump and injection water pump, hold the urea solution in the urea water tank, urea water pump's entry end and urea water tank intercommunication, its exit end and injection water pump intercommunication, injection water pump's exit end is connected with the nozzle. Preferably, the nozzle is made of a high temperature resistant material.
The active carbon storage and conveying device 9 comprises a storage bin and a variable-frequency speed-regulation quantitative feeder, wherein the storage bin is used for containing active carbon, and the variable-frequency speed-regulation quantitative feeder is communicated with the storage bin and is used for conveying the active carbon to a flue of a communication quenching tower 2 and a dry deacidification tower 3. That is to say, the addition of active carbon is controlled by Variable Frequency Speed Governing (VFSG) dosing machine, inserts an air pipe through the roots's fan and sweeps Variable Frequency Speed Governing (VFSG) dosing machine, makes active carbon and flue gas intensive mixing contact, improves the absorption purification to pollutants such as heavy metal and dioxin in the flue gas.
In addition, a Venturi acceleration pipe is arranged at the inlet of the dry-type deacidification tower 3, and the baking soda enters the dry-type deacidification tower 3 through the Venturi acceleration pipe, so that the chemical reaction between the baking soda and acidic components (such as SOx, HCl and the like) is facilitated, and the heat bearing capacity and NaCl capacity of the filter bag in the first bag type dust collector 4 are ensured2Deliquescence of (1). For the treatment of hazardous waste incineration flue gas, in order to cooperate with an activated carbon injection adsorption process, particularly to better control heavy metal ions and dioxin, the first bag type dust collector 4 and the second bag type dust collector 7 are both long-bag low-pressure pulse bag type dust collectors. With the operation of the long-bag low-pressure pulse bag type dust collector, dust and particles contained in the flue gas form filter cakes on the outer side surface of the filter bag due to inertial impact, direct interception, diffusion, electrostatic attraction and the like. When the pressure difference is larger than the set pressure difference of the instrument, stopping filtering and backwashing by using air in a factory; when the resistance is increased to a fixed value (1200Pa, adjustable), the dust remover starts pulse blowing to remove the dust, and the removed dust is collected in the dust hopper and discharged into a lower dust conveying system through the dust discharging valve. The long-bag low-pressure pulse bag type dust collector adopts an off-line pulse dust cleaning mode, and the dust cleaning system adopts PLC automatic control. The control mode adopts two modes of timing and constant pressure at the same time, and the timing control time is adjustable.
And a precooler is arranged at the inlet end of the pickling tower 5, and the flue gas enters the pickling tower 5 through the precooler. In order to prevent the formation of smoke, a smoke heat exchanger 10 is further arranged between the neutralization reaction tower 6 and the second bag type dust removal 7, and the low-temperature clean wet smoke is heated by using the high-temperature original smoke, so that the clean smoke enters the second bag type dust removal 7 after the temperature of the clean smoke rises, and the content of particulate matters in the smoke is further reduced. The flue gas heat exchanger 10 can not only increase the temperature of the discharged flue gas and achieve the purpose of eliminating the white smoke plume, but also improve the reaction activity of the SCR catalyst tower 8.
Specifically, the method adopting the hazardous waste incineration flue gas ultra-clean emission treatment system comprises the following steps:
S1: the flue gas enters the waste heat boiler 1 and is mixed with the urea solution in the denitrification device, and NOx components in the flue gas are in O2The urea solution is subjected to reduction reaction with the urea solution in the presence of the ammonia, meanwhile, the water in the urea solution is completely vaporized and taken away by the flue gas, the redundant urea is converted into ammonia, and the ammonia is further subjected to reduction reaction with NOx in a low-temperature section, so that the emission concentration of the NOx is reduced.
S2: the temperature of the flue gas is reduced to 500 ℃ through the waste heat boiler 1, the flue gas enters the quenching tower 2 from the upper part, the spray gun is arranged in the quenching tower 2, water drops atomized by the spray gun exchange heat with the flue gas, the water drops are evaporated in a short time, heat is rapidly taken away, the temperature of the flue gas is instantly reduced to be below 200 ℃, the residence time of the flue gas in the quenching tower 2 is less than 1s, and the resynthesis of dioxin is effectively prevented.
S3: the baking soda enters the dry-type deacidification tower 3 through a Venturi accelerating tube and chemically reacts with acid components in the smoke.
S4: the activated carbon is continuously added, the flue gas is introduced into the first bag type dust collector 4 to filter dust and particles contained in the flue gas, and the activated carbon is mixed with the flue gas to improve the adsorption and purification of heavy metals and dioxin in the flue gas.
S5: flue gas enters an acid washing tower 5 through a first bag type dust collector 4, a precooler is arranged at the inlet end of the acid washing tower 5, the precooler and the acid washing tower 5 are designed in an integrated mode, the precooler enables the flue gas at the outlet end of the first bag type dust collector 4 to be rapidly cooled, the cooled flue gas is subjected to acid washing, the flue gas after acid washing enters a neutralization reaction tower 6, and the flue gas and alkali liquor are subjected to reverse washing to remove acid components in the flue gas.
S6: the flue gas enters a second bag type dust collector 7 and an SCR catalyst tower 8 through a flue gas heat exchanger 10, the SCR catalyst tower 8 adopts a standard module of a low-temperature dioxin removal system, and finally the flue gas is discharged through a chimney.
After the hazardous waste incineration flue gas is purified by the treatment system, the following emission standards can be achieved: the emission concentration of the smoke dust is controlled to be 10mg/m3(ii) a NOx emission concentration 500mg/m3；SO2Discharge concentration of 200mg/m3(ii) a The emission concentration of dioxin pollutants can be controlled to be 0.5ng/Nm3The following.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (9)
1. A hazardous waste incineration flue gas ultra-clean emission treatment system is characterized by comprising a waste heat boiler, a quench tower, an activated carbon storage and conveying device, a dry deacidification tower, a first bag type dust collector, an acid washing tower, a neutralization reaction tower, a second bag type dust collector and an SCR catalyst tower which are sequentially connected in series, wherein a heat medium inlet of the waste heat boiler is used as an inlet of hazardous waste incineration flue gas, and an outlet end of the SCR catalyst tower is connected with a chimney;
the waste heat boiler is characterized in that a denitrification device is arranged in the first return stroke of the waste heat boiler, the concentration of NOx components in the flue gas is reduced by adopting a non-catalytic reduction method, a flue gas heat exchanger is further arranged between the neutralization reaction tower and the second bag type dust removal tower, and a Venturi accelerating tube is arranged at the inlet of the dry type deacidification tower.
2. The system for ultra-clean emission treatment of hazardous waste incineration flue gas as claimed in claim 1, wherein the denitrification device comprises a urea water tank, a urea water pump and a jet water pump, wherein the urea water tank contains urea solution, the inlet end of the urea water pump is communicated with the urea water tank, the outlet end of the urea water pump is communicated with the jet water pump, and the outlet end of the jet water pump is connected with a nozzle.
3. The hazardous waste incineration flue gas ultra-clean emission treatment system of claim 2, wherein the nozzle is made of a high temperature resistant material.
4. The hazardous waste incineration flue gas ultra-clean emission treatment system of claim 1, wherein the first bag collector and the second bag collector are both long-bag low-pressure pulse bag collectors.
5. The ultra-clean emission treatment system for the hazardous waste incineration flue gas as claimed in claim 1, wherein the inlet end of the acid washing tower is provided with a precooler, and the flue gas enters the acid washing tower through the precooler.
6. The hazardous waste incineration flue gas ultra-clean emission treatment system according to claim 1, wherein the activated carbon storage and conveying device comprises a storage bin and a variable-frequency speed-regulating quantitative feeder, the storage bin is used for containing activated carbon, and the variable-frequency speed-regulating quantitative feeder is communicated with the storage bin and is used for conveying the activated carbon to a flue communicated with a quenching tower and a dry deacidification tower.
7. The ultra-clean emission treatment system for the hazardous waste incineration flue gas as claimed in claim 1, wherein an induced draft fan is arranged at the outlet end of the SCR catalyst tower.
8. The ultra-clean emission treatment system for the hazardous waste incineration flue gas as claimed in any one of claims 2-7, wherein a sampling hole is formed on the chimney for installing an online flue gas detection device.
9. A method for using the ultra-clean emission treatment system for hazardous waste incineration flue gas of any one of claims 1 to 8, comprising the steps of:
s1: the flue gas enters a waste heat boiler and is mixed with urea solution in a denitrification device, and NOx in the flue gas is in an O state2In the presence of urea solution to perform a reduction reaction;
s2: the temperature of the flue gas is reduced to 500 ℃ through a waste heat boiler, the flue gas enters a quench tower from the upper part through a flue, a spray gun is arranged in the quench tower, water drops atomized by the spray gun exchange heat with the flue gas, the temperature of the flue gas is reduced to below 200 ℃, and the residence time of the flue gas in the quench tower is less than 1 s;
s3: the baking soda enters a dry-type deacidification tower through a Venturi accelerating tube and chemically reacts with acidic components in the flue gas;
s4: continuously adding activated carbon, introducing the flue gas into a first bag type dust collector to filter dust and particles contained in the flue gas, mixing the activated carbon with the flue gas, and improving the adsorption and purification of heavy metals and dioxin in the flue gas;
s5: the flue gas enters an acid washing tower through a first bag type dust collector, a precooler is arranged at the inlet end of the acid washing tower, the cooled flue gas is subjected to acid washing, the flue gas after acid washing enters a neutralization reaction tower, and the flue gas and alkali liquor are subjected to backwashing so as to remove acid components in the flue gas;
s6: the flue gas enters the second bag type dust collector and the SCR catalyst tower through the flue gas heat exchanger, and is finally discharged through a chimney.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114278950A (en) * | 2021-12-23 | 2022-04-05 | 上海大学无锡产业研究院 | Waste gas treatment equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746141A (en) * | 1995-10-06 | 1998-05-05 | Consorzio Obbligatorio Nazionale Per Il Riciclaggio Dei Contenitori In Plastica Per Liquidi | High temperature acid gases and particulate removal in waste incineration process |
| CN105854571A (en) * | 2016-06-21 | 2016-08-17 | 南通天蓝环保能源成套设备有限公司 | Novel medical waste incineration flue gas purification system |
| CN109012124A (en) * | 2018-09-26 | 2018-12-18 | 苏州西热节能环保技术有限公司 | A kind of dangerous waste incineration flue gas depth denitration purification system and method |
| CN110006050A (en) * | 2019-03-20 | 2019-07-12 | 浙江大维高新技术股份有限公司 | Dangerous waste incineration flue gas purification system and technique |
| CN110081445A (en) * | 2019-05-28 | 2019-08-02 | 北京首创环境科技有限公司 | A kind of liquid hazardous waste burn system and its burning process |
| CN110270210A (en) * | 2019-07-18 | 2019-09-24 | 北京首创环境科技有限公司 | A kind of energy-saving biomass boiler flue gas purification system and method |
| CN210891732U (en) * | 2019-11-06 | 2020-06-30 | 北京首创环境科技有限公司 | Hazardous waste burns ultra-clean emission processing system of flue gas |
-
2019
- 2019-11-06 CN CN201911074434.5A patent/CN110645583A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746141A (en) * | 1995-10-06 | 1998-05-05 | Consorzio Obbligatorio Nazionale Per Il Riciclaggio Dei Contenitori In Plastica Per Liquidi | High temperature acid gases and particulate removal in waste incineration process |
| CN105854571A (en) * | 2016-06-21 | 2016-08-17 | 南通天蓝环保能源成套设备有限公司 | Novel medical waste incineration flue gas purification system |
| CN109012124A (en) * | 2018-09-26 | 2018-12-18 | 苏州西热节能环保技术有限公司 | A kind of dangerous waste incineration flue gas depth denitration purification system and method |
| CN110006050A (en) * | 2019-03-20 | 2019-07-12 | 浙江大维高新技术股份有限公司 | Dangerous waste incineration flue gas purification system and technique |
| CN110081445A (en) * | 2019-05-28 | 2019-08-02 | 北京首创环境科技有限公司 | A kind of liquid hazardous waste burn system and its burning process |
| CN110270210A (en) * | 2019-07-18 | 2019-09-24 | 北京首创环境科技有限公司 | A kind of energy-saving biomass boiler flue gas purification system and method |
| CN210891732U (en) * | 2019-11-06 | 2020-06-30 | 北京首创环境科技有限公司 | Hazardous waste burns ultra-clean emission processing system of flue gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278950A (en) * | 2021-12-23 | 2022-04-05 | 上海大学无锡产业研究院 | Waste gas treatment equipment |
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